George's Secret Key Paperback Collection: George's Secret Key to the Universe; George's Cosmic Treasure Hunt; George and the Big Bang | Price history
Price change log
12/24/2022: $31.77
12/20/2022: $20.99
11/16/2022: $31.77
11/11/2022: $34.77
11/09/2022: $34.62
11/01/2022: $35.58
10/04/2022: $36.95
10/03/2022: $38.59
10/02/2022: $57.9
10/01/2022: $57.93
09/26/2022: $59.99
09/25/2022: $38.99
09/22/2022: $60.71
09/21/2022: $60.83
09/20/2022: $60.8
09/19/2022: $58.71
09/17/2022: $60.8
09/16/2022: $50.37
09/15/2022: $64.81
09/14/2022: $64.93
09/12/2022: $64.9
09/11/2022: $67.84
09/10/2022: $77.92
09/09/2022: $77.8
09/08/2022: $87.86
09/07/2022: $87.83
09/06/2022: $85.67
09/03/2022: $87.86
09/02/2022: $84.19
08/30/2022: $86.36
08/29/2022: $92.72
08/28/2022: $94.79
08/26/2022: $96.85
08/25/2022: $96.9
08/24/2022: $92.7
08/23/2022: $94.88
08/20/2022: $87.27
08/19/2022: $90.44
08/13/2022: $93.61
08/11/2022: $96.71
08/08/2022: $93.66
07/29/2022: $96.85
07/09/2022: $99.9
06/15/2022: $119.95
05/22/2022: $39.92
05/01/2022: $39.95
04/10/2022: $69.91
04/09/2022: $77.07
04/08/2022: $78.67
04/07/2022: $80.55
04/06/2022: $82.15
04/05/2022: $83.73
04/04/2022: $85.47
03/09/2022: $85.83
01/26/2022: $63.99
01/25/2022: $80.02
01/24/2022: $73.62
01/23/2022: $75.34
01/22/2022: $76.84
01/17/2022: $79.55
01/16/2022: $79.67
01/15/2022: $79.87
01/14/2022: $80.01
01/13/2022: $80.19
01/12/2022: $80.37
01/11/2022: $80.53
01/10/2022: $80.73
01/09/2022: $80.87
01/08/2022: $81.03
01/07/2022: $81.19
01/06/2022: $81.35
01/05/2022: $81.49
01/04/2022: $81.65
01/03/2022: $81.81
01/02/2022: $75.96
01/01/2022: $76.1
12/31/2021: $76.26
12/30/2021: $76.4
12/29/2021: $76.54
12/28/2021: $76.7
12/27/2021: $76.84
12/26/2021: $77
12/25/2021: $77.16
12/24/2021: $77.3
12/23/2021: $77.44
12/22/2021: $77.58
12/21/2021: $77.74
12/20/2021: $77.9
12/19/2021: $78.06
12/18/2021: $78.22
12/17/2021: $78.38
12/16/2021: $78.54
12/15/2021: $78.68
12/14/2021: $78.86
12/13/2021: $79.02
12/12/2021: $79.22
12/11/2021: $79.36
12/10/2021: $79.56
12/09/2021: $79.7
12/08/2021: $79.9
12/07/2021: $79.96
12/06/2021: $80.08
12/05/2021: $80.28
12/04/2021: $80.42
12/03/2021: $80.6
12/02/2021: $80.76
12/01/2021: $80.92
11/30/2021: $81.1
11/29/2021: $81.26
11/28/2021: $81.42
11/27/2021: $81.6
11/26/2021: $81.74
11/25/2021: $85.82
11/24/2021: $98.21
11/23/2021: $98.37
11/22/2021: $98.55
11/21/2021: $98.71
11/20/2021: $98.85
11/19/2021: $99.01
11/18/2021: $99.17
11/17/2021: $99.35
11/16/2021: $99.47
11/15/2021: $99.63
11/14/2021: $99.81
11/13/2021: $99.97
11/12/2021: $100.13
11/11/2021: $100.27
11/10/2021: $100.39
11/09/2021: $100.57
11/08/2021: $100.73
11/07/2021: $100.87
11/06/2021: $101.05
11/05/2021: $101.19
11/04/2021: $101.37
11/03/2021: $101.49
11/02/2021: $101.63
11/01/2021: $101.77
10/31/2021: $101.95
10/30/2021: $102.07
10/29/2021: $102.23
10/28/2021: $102.35
10/27/2021: $102.49
10/26/2021: $102.61
10/25/2021: $102.67
10/24/2021: $102.75
10/23/2021: $102.89
10/22/2021: $102.99
10/21/2021: $103.11
10/20/2021: $103.19
10/19/2021: $103.22
10/18/2021: $103.26
10/15/2021: $103.35
10/12/2021: $103.41
10/07/2021: $103.49
10/04/2021: $103.55
10/02/2021: $103.59
10/01/2021: $103.63
09/30/2021: $103.65
09/29/2021: $103.69
09/28/2021: $103.75
09/27/2021: $103.83
09/26/2021: $103.89
09/25/2021: $103.95
09/24/2021: $104.01
09/23/2021: $104.09
09/22/2021: $104.17
09/21/2021: $104.27
09/20/2021: $104.41
09/19/2021: $104.55
09/18/2021: $104.67
09/17/2021: $104.82
09/16/2021: $104.84
09/15/2021: $104.96
09/14/2021: $105.02
08/25/2021: $105.12
08/24/2021: $105.26
08/23/2021: $105.4
08/22/2021: $105.56
08/21/2021: $105.74
08/20/2021: $105.9
08/19/2021: $109.89
08/18/2021: $121.83
08/17/2021: $121.93
08/16/2021: $122.05
08/15/2021: $122.17
08/14/2021: $122.31
08/13/2021: $122.43
08/12/2021: $122.49
08/11/2021: $122.55
08/10/2021: $122.63
08/09/2021: $122.71
08/08/2021: $122.77
08/07/2021: $122.93
08/06/2021: $123.05
08/05/2021: $123.21
08/04/2021: $123.33
08/03/2021: $123.45
08/02/2021: $123.57
08/01/2021: $123.61
07/31/2021: $123.73
07/30/2021: $123.87
07/29/2021: $123.95
07/28/2021: $124.05
07/27/2021: $124.17
07/26/2021: $124.27
07/25/2021: $124.41
07/24/2021: $124.47
07/23/2021: $124.61
07/22/2021: $124.67
07/21/2021: $124.77
07/20/2021: $124.87
07/19/2021: $124.93
07/18/2021: $125.03
07/17/2021: $125.15
07/16/2021: $125.23
07/15/2021: $125.31
07/14/2021: $125.37
07/13/2021: $125.45
07/11/2021: $125.57
07/10/2021: $125.61
07/09/2021: $125.67
07/08/2021: $125.75
07/07/2021: $125.85
05/28/2021: $125.95
05/27/2021: $51.21
05/26/2021: $32.83
05/25/2021: $32.9
05/24/2021: $32.94
05/23/2021: $33.01
05/22/2021: $33.05
05/21/2021: $36.71
05/18/2021: $38.99
05/17/2021: $125.56
05/16/2021: $125.61
05/15/2021: $125.7
05/14/2021: $125.76
05/13/2021: $125.82
05/12/2021: $125.86
05/08/2021: $125.95
05/07/2021: $128.1
05/06/2021: $157.26
05/04/2021: $165.53
04/23/2021: $125.95
04/22/2021: $118.44
04/21/2021: $119.36
04/20/2021: $119.66
04/19/2021: $109.25
04/18/2021: $110.85
04/17/2021: $104.57
04/16/2021: $107.88
04/15/2021: $111.77
04/14/2021: $114.17
04/13/2021: $117.48
04/12/2021: $118.97
04/11/2021: $116.4
04/10/2021: $117.7
04/09/2021: $118.5
04/08/2021: $110.1
04/07/2021: $115.31
04/06/2021: $112.54
04/05/2021: $112.65
04/04/2021: $115.85
04/03/2021: $119.05
04/02/2021: $116.65
04/01/2021: $111.18
03/31/2021: $118.38
03/30/2021: $127.58
03/29/2021: $138.36
03/27/2021: $144.47
03/26/2021: $144.58
03/25/2021: $146.18
03/24/2021: $148.87
03/23/2021: $148.98
03/22/2021: $150.58
03/21/2021: $152.18
03/20/2021: $154.87
03/19/2021: $156.07
03/18/2021: $156.98
03/17/2021: $158.47
03/16/2021: $159.38
03/15/2021: $160.98
02/25/2021: $162.2
02/23/2021: $163
02/22/2021: $163.8
02/21/2021: $164.6
02/20/2021: $166.09
02/19/2021: $166.2
02/17/2021: $158.22
02/16/2021: $158.33
02/15/2021: $159.82
02/14/2021: $159.93
02/13/2021: $161.42
02/12/2021: $161.53
02/11/2021: $162.23
02/10/2021: $163.21
02/09/2021: $164.01
02/08/2021: $164.81
02/07/2021: $165.61
02/06/2021: $166.41
02/05/2021: $167.21
02/04/2021: $168.01
02/03/2021: $168.81
02/02/2021: $169.61
02/01/2021: $170.23
01/31/2021: $170.85
01/30/2021: $171.37
01/29/2021: $172.57
01/28/2021: $173.87
01/27/2021: $174.49
01/26/2021: $175.11
01/25/2021: $175.73
01/24/2021: $176.86
01/23/2021: $177.55
01/22/2021: $178.17
01/21/2021: $179.37
01/20/2021: $179.99
01/19/2021: $180.61
01/18/2021: $181.74
01/17/2021: $181.85
01/16/2021: $182.98
01/15/2021: $192.1
01/14/2021: $193.23
01/13/2021: $203.39
01/12/2021: $214.09
01/07/2021: $225.35
01/04/2021: $221.46
01/03/2021: $213.58
01/02/2021: $201.81
01/01/2021: $194.03
12/30/2020: $161.7
12/28/2020: $128.17
12/27/2020: $129.37
12/26/2020: $130.57
12/25/2020: $131.77
12/24/2020: $134.16
12/23/2020: $133.59
12/22/2020: $134.89
12/21/2020: $135.51
12/20/2020: $136.13
12/19/2020: $136.75
12/18/2020: $137.26
12/17/2020: $137.88
12/16/2020: $137.99
12/15/2020: $138.61
12/14/2020: $139.12
12/13/2020: $139.23
12/11/2020: $112.29
12/10/2020: $124.42
12/09/2020: $130.96
12/08/2020: $131.94
12/07/2020: $138.88
12/06/2020: $146.18
12/05/2020: $153.87
12/04/2020: $161.96
12/03/2020: $170.48
12/02/2020: $179.45
12/01/2020: $188.89
11/30/2020: $197.96
11/27/2020: $198.83
11/26/2020: $195.04
11/25/2020: $165.3
11/23/2020: $132.25
11/22/2020: $133.45
11/21/2020: $134.65
11/20/2020: $135.63
11/18/2020: $136.61
11/17/2020: $138.57
11/13/2020: $138.77
11/12/2020: $139.54
11/11/2020: $140.31
11/10/2020: $141.08
11/09/2020: $141.85
11/07/2020: $143.39
11/05/2020: $144.93
11/04/2020: $145.7
11/03/2020: $146.47
11/02/2020: $148.01
11/01/2020: $148.78
10/30/2020: $149.55
10/29/2020: $150.32
10/28/2020: $158.17
10/26/2020: $133.93
10/25/2020: $107.15
10/24/2020: $85.72
10/23/2020: $90.23
10/22/2020: $94.97
10/21/2020: $99.96
10/16/2020: $100.02
09/24/2020: $29.99
09/23/2020: $31.17
09/22/2020: $36.34
09/21/2020: $42.37
09/20/2020: $49.39
09/18/2020: $63.79
09/17/2020: $75.42
09/16/2020: $91.3
09/13/2020: $38.99
09/10/2020: $152.48
09/07/2020: $152.57
09/06/2020: $152.61
09/04/2020: $152.68
09/01/2020: $83.78
08/29/2020: $79.78
08/28/2020: $79.62
08/27/2020: $83.62
08/25/2020: $167.82
08/18/2020: $79.42
08/17/2020: $79.46
08/15/2020: $79.49
08/12/2020: $74.17
06/25/2020: $69.95
06/22/2020: $75.99
06/17/2020: $71.97
06/03/2020: $75.98
06/01/2020: $79.99
05/30/2020: $78.99
05/25/2020: $76.99
05/24/2020: $80.99
05/02/2020: $22.49
04/29/2020: $38.99
04/28/2020: $29.86
04/26/2020: $30.78
04/24/2020: $31.93
04/23/2020: $32.1
04/03/2020: $38.99
04/01/2020: $25.98
03/29/2020: $25.68
03/28/2020: $20.37
03/27/2020: $22.05
03/26/2020: $19.15
03/25/2020: $18.72
03/24/2020: $18.76
03/19/2020: $30.75
03/18/2020: $18.44
03/17/2020: $19.22
03/16/2020: $19.47
03/14/2020: $19.57
03/11/2020: $18.55
12/19/2019: $19.72
12/08/2019: $15.74
11/22/2019: $15.79
11/05/2019: $18.35
10/31/2019: $18.42
10/01/2019: $19.73
09/30/2019: $20.84
09/14/2019: $19.73
09/13/2019: $20.84
08/22/2019: $19.72
08/17/2019: $20.84
08/12/2019: $19.74
08/11/2019: $22.92
08/10/2019: $23.22
08/08/2019: $22.44
08/05/2019: $19.74
08/04/2019: $22.44
07/29/2019: $19.73
07/28/2019: $22.44
07/22/2019: $19.73
07/21/2019: $22.87
07/15/2019: $19.74
07/14/2019: $23.22
07/08/2019: $19.73
07/07/2019: $23.22
07/01/2019: $19.72
06/30/2019: $23.03
06/28/2019: $24.78
06/26/2019: $24.95
06/25/2019: $25.02
06/24/2019: $25.12
06/23/2019: $25.28
06/22/2019: $25.44
06/19/2019: $24.96
06/18/2019: $25.02
06/17/2019: $25.16
06/16/2019: $25.32
06/15/2019: $25.48
06/13/2019: $24.78
06/12/2019: $23.97
06/11/2019: $27.14
06/10/2019: $27.23
06/09/2019: $27.3
06/08/2019: $27.44
06/07/2019: $27.58
06/06/2019: $27.67
06/05/2019: $27.8
06/04/2019: $27.94
05/29/2019: $25.18
05/28/2019: $24.65
05/27/2019: $25
05/20/2019: $25.17
05/13/2019: $22.29
05/12/2019: $23.15
05/11/2019: $22.29
05/10/2019: $22.64
05/09/2019: $22.8
05/07/2019: $22.29
05/06/2019: $22.53
05/05/2019: $22.81
05/04/2019: $21.96
05/01/2019: $22.29
04/30/2019: $22.16
04/29/2019: $22.72
04/27/2019: $22.16
04/26/2019: $22.25
04/25/2019: $22.93
04/24/2019: $22.88
04/23/2019: $21.99
04/21/2019: $22.29
04/20/2019: $22.22
04/19/2019: $22.47
04/18/2019: $22.29
04/09/2019: $21.95
04/08/2019: $22.29
04/07/2019: $21.95
03/29/2019: $22.29
03/28/2019: $21.95
03/27/2019: $22.59
03/26/2019: $22.36
03/25/2019: $21.95
03/24/2019: $22.05
03/17/2019: $21.95
03/16/2019: $18.55
03/15/2019: $19.28
03/14/2019: $20.3
03/13/2019: $21.26
03/12/2019: $19.27
03/11/2019: $20.68
03/10/2019: $21.08
03/09/2019: $20.91
03/08/2019: $22.06
03/07/2019: $20.26
03/06/2019: $21
03/05/2019: $19.44
03/04/2019: $20.19
03/03/2019: $21.9
03/02/2019: $20.91
03/01/2019: $19.53
02/28/2019: $21.04
02/27/2019: $21.88
02/26/2019: $21.66
02/25/2019: $20.92
02/24/2019: $21.58
02/23/2019: $21.47
02/22/2019: $20.84
02/21/2019: $21.81
02/20/2019: $21.07
02/19/2019: $20.69
02/18/2019: $21.48
02/17/2019: $21.2
02/16/2019: $20.49
02/15/2019: $20.32
02/14/2019: $22.02
02/13/2019: $21.2
02/12/2019: $19.94
02/11/2019: $21.18
02/10/2019: $20.71
02/09/2019: $20.34
02/08/2019: $21.82
02/06/2019: $21.95
02/05/2019: $22.29
01/31/2019: $24.88
01/28/2019: $25.16
01/26/2019: $23.22
01/25/2019: $22.29
01/24/2019: $23.22
01/23/2019: $22.29
01/22/2019: $23.22
01/11/2019: $25.17
01/10/2019: $23.22
01/06/2019: $22.29
01/05/2019: $23.22
01/02/2019: $22.29
12/22/2018: $23.22
12/21/2018: $22.29
12/19/2018: $23.22
12/18/2018: $22.29
12/17/2018: $23.22
12/14/2018: $22.29
12/13/2018: $23.22
12/12/2018: $22.29
12/11/2018: $25.17
12/05/2018: $22.29
12/04/2018: $21.71
12/03/2018: $22.16
12/02/2018: $21.89
11/30/2018: $21.65
11/29/2018: $22.55
11/28/2018: $21.9
11/26/2018: $21.98
11/25/2018: $21.83
11/24/2018: $22.03
11/23/2018: $22.29
11/22/2018: $22.43
11/21/2018: $22.24
11/20/2018: $22.46
11/19/2018: $22.21
11/18/2018: $22.56
11/16/2018: $21.8
11/15/2018: $22.05
11/14/2018: $21.97
11/13/2018: $22.03
11/11/2018: $22.29
11/10/2018: $21.86
11/09/2018: $22.34
11/08/2018: $22.29
11/07/2018: $22.01
10/29/2018: $23.72
10/27/2018: $22.29
10/23/2018: $23.22
10/20/2018: $22.29
10/18/2018: $23.22
10/16/2018: $22.29
10/15/2018: $23.22
10/11/2018: $22.29
10/10/2018: $25.17
09/16/2018: $24.55
09/14/2018: $25.19
09/05/2018: $26.38
06/26/2018: $24.55
06/23/2018: $25.19
06/22/2018: $29.19
06/05/2018: $33.19
06/04/2018: $28.56
06/03/2018: $28.19
06/01/2018: $28.15
05/31/2018: $28.9
05/10/2018: $33.19
05/08/2018: $31.28
05/05/2018: $33.19
04/05/2018: $32.29
04/04/2018: $23.72
03/30/2018: $32.29
03/28/2018: $27.67
03/20/2018: $31.72
03/19/2018: $30.41
03/18/2018: $31.72
03/17/2018: $23.12
03/16/2018: $25.77
03/15/2018: $31.56
03/14/2018: $23.9
03/13/2018: $18.48
03/12/2018: $18.6
02/16/2018: $22.8
02/08/2018: $23.97
02/07/2018: $23.87
02/05/2018: $24.05
02/04/2018: $22.29
02/03/2018: $19.51
02/02/2018: $21.46
02/01/2018: $23.07
01/30/2018: $24.32
01/29/2018: $24.13
01/28/2018: $23.89
01/27/2018: $23.99
01/26/2018: $24.03
01/24/2018: $23.73
01/23/2018: $23.92
01/21/2018: $24.13
01/20/2018: $23.73
01/19/2018: $23.85
01/18/2018: $24.5
01/17/2018: $23.97
01/16/2018: $23.64
01/15/2018: $23.24
01/14/2018: $23.44
01/13/2018: $23.26
01/11/2018: $23.3
01/10/2018: $23.66
12/31/2017: $22.8
12/30/2017: $22.19
12/29/2017: $23.31
12/27/2017: $23.47
12/25/2017: $23.64
12/24/2017: $24.15
12/23/2017: $23.58
12/22/2017: $23.95
12/21/2017: $23.48
12/20/2017: $24.18
12/19/2017: $23.22
12/16/2017: $22.2
12/15/2017: $23.36
12/14/2017: $23.48
12/13/2017: $23.78
12/11/2017: $23.81
12/10/2017: $20.72
12/08/2017: $23.83
12/04/2017: $23.87
12/03/2017: $21.1
12/02/2017: $21.16
12/01/2017: $21.13
11/30/2017: $21.03
11/29/2017: $21
11/20/2017: $19.3
11/13/2017: $19.65
11/03/2017: $9.01
11/02/2017: $19.11
10/26/2017: $19.65
10/09/2017: $9.01
10/06/2017: $13
10/03/2017: $14.1
09/30/2017: $15.32
09/27/2017: $11.53
09/16/2017: $11.63
08/01/2017: $17.71
07/31/2017: $15.5
07/29/2017: $15.32
07/28/2017: $16.35
07/27/2017: $12.77
07/25/2017: $15.15
07/24/2017: $17.12
07/23/2017: $17.71
07/21/2017: $17.52
07/20/2017: $18.18
07/19/2017: $17.17
07/17/2017: $19.11
07/16/2017: $18.2
07/15/2017: $18.87
07/14/2017: $16.98
07/13/2017: $17.87
07/12/2017: $17.06
07/11/2017: $18.22
07/10/2017: $19.07
07/09/2017: $19.1
07/08/2017: $16.6
07/06/2017: $19.06
07/04/2017: $17.99
07/03/2017: $18.01
06/30/2017: $14.01
06/28/2017: $14.04
06/26/2017: $18.18
06/25/2017: $19.07
06/24/2017: $15.42
06/22/2017: $15.47
06/20/2017: $15.52
06/16/2017: $15.74
06/15/2017: $15.78
06/14/2017: $15.83
06/12/2017: $16.09
06/10/2017: $16.19
06/09/2017: $16.23
06/08/2017: $16.26
06/07/2017: $16.37
06/06/2017: $16.4
06/05/2017: $17.61
06/04/2017: $18.34
06/03/2017: $15.21
06/02/2017: $15.36
06/01/2017: $15.58
05/31/2017: $15.86
05/30/2017: $15.89
05/28/2017: $15.95
05/26/2017: $15.97
05/24/2017: $18.56
05/22/2017: $15.97
05/20/2017: $16.18
05/18/2017: $16.25
05/17/2017: $16.63
05/16/2017: $14.26
05/15/2017: $15.15
05/13/2017: $16.16
05/12/2017: $16.22
05/11/2017: $16.29
05/10/2017: $16.35
05/09/2017: $16.85
05/08/2017: $18.55
05/07/2017: $16.36
05/06/2017: $17.53
05/05/2017: $18.25
05/03/2017: $18.56
05/02/2017: $17.67
05/01/2017: $17.74
04/30/2017: $17.81
04/28/2017: $17.93
04/27/2017: $17.99
04/26/2017: $18.09
04/24/2017: $18.15
04/23/2017: $18.5
04/21/2017: $17.94
04/19/2017: $18.08
04/17/2017: $18.16
04/16/2017: $18.4
04/15/2017: $18.03
04/14/2017: $18.17
04/13/2017: $18.2
04/12/2017: $14.95
04/10/2017: $15.01
04/08/2017: $14.83
04/07/2017: $14.87
04/05/2017: $14.94
04/04/2017: $15
04/02/2017: $15.04
03/29/2017: $17.6
03/24/2017: $17.99
03/23/2017: $13.32
03/22/2017: $13.41
03/21/2017: $13.53
03/19/2017: $13.93
03/18/2017: $13.57
03/17/2017: $13.77
03/16/2017: $13.92
03/12/2017: $17.98
03/11/2017: $17.84
03/10/2017: $17.99
03/07/2017: $13.99
03/06/2017: $15.79
03/05/2017: $14.97
03/04/2017: $14.91
03/03/2017: $15.7
02/23/2017: $13.98
02/22/2017: $14.33
02/21/2017: $12.99
02/20/2017: $17.65
02/19/2017: $17.75
02/18/2017: $17.78
02/17/2017: $17.45
02/16/2017: $17.34
02/13/2017: $17.45
02/12/2017: $17.8
02/09/2017: $17.57
02/08/2017: $12.98
02/07/2017: $17.57
02/03/2017: $18.23
02/02/2017: $18.91
02/01/2017: $18.59
01/31/2017: $18.77
01/27/2017: $19.43
01/23/2017: $18.93
01/20/2017: $19.43
01/17/2017: $18.84
01/14/2017: $19.33
12/28/2016: $17.44
12/22/2016: $17.84
12/20/2016: $17.94
12/19/2016: $17.99
12/17/2016: $18.1
12/16/2016: $18.23
12/15/2016: $18.37
12/14/2016: $18.46
12/13/2016: $18.51
12/11/2016: $18.62
12/10/2016: $19.43
12/04/2016: $18.93
12/01/2016: $19.43
11/29/2016: $18.93
11/27/2016: $19.43
11/26/2016: $18.93
11/23/2016: $19.43
11/11/2016: $18.95
10/22/2016: $18.73
10/15/2016: $18.51
10/06/2016: $18.3
09/17/2016: $19.95
09/16/2016: $19.99
09/15/2016: $20.2
09/14/2016: $20.35
09/06/2016: $20.44