The Perfect English Grammar Workbook: Simple Rules and Quizzes to Master Today's English | Price history
Price change log
12/12/2023: $12.68
12/02/2023: $12.92
12/01/2023: $13.99
11/29/2023: $12.92
11/28/2023: $13.99
11/21/2023: $11.74
11/13/2023: $13.99
11/12/2023: $13.8
11/09/2023: $13.99
11/08/2023: $13.8
11/05/2023: $13.99
11/04/2023: $13.8
11/02/2023: $13.99
10/31/2023: $13.8
10/28/2023: $13.99
10/24/2023: $13.79
10/01/2023: $13.99
09/23/2023: $13.5
09/03/2023: $13.99
08/20/2023: $13.68
08/10/2023: $13.99
08/09/2023: $13.83
07/23/2023: $13.99
12/20/2022: $9.99
12/18/2022: $10.11
06/21/2022: $11.89
03/08/2022: $11.99
03/07/2022: $12.06
08/19/2021: $13.29
07/28/2021: $13.24
07/27/2021: $13.2
07/09/2021: $13.24
07/08/2021: $13.89
07/04/2021: $13.21
06/28/2021: $13.85
06/02/2021: $13.98
11/21/2020: $11.75
09/20/2020: $12.29
09/19/2020: $8.79
09/02/2020: $12.29
08/15/2020: $12.24
07/04/2020: $11.97
07/03/2020: $8.75
07/02/2020: $8.78
06/28/2020: $11.97
06/06/2020: $9.99
05/27/2020: $9.92
05/26/2020: $8.79
05/25/2020: $9.92
05/21/2020: $8.95
05/18/2020: $8.99
02/18/2020: $12.59
10/30/2019: $12.55
10/01/2019: $12.59
01/20/2019: $11.89
01/18/2019: $12.59
10/25/2018: $11.89
10/17/2018: $12.59
10/13/2018: $11.89
10/05/2018: $12.59
10/03/2018: $11.89
10/01/2018: $12.59
09/30/2018: $11.05
09/29/2018: $11.36
09/28/2018: $11.28
09/15/2018: $12.59
09/14/2018: $11.89
09/06/2018: $11.82
08/23/2018: $12.59
08/17/2018: $11.89
06/02/2018: $11.19
04/09/2018: $11.89
03/31/2018: $11.56
03/23/2018: $11.06
03/15/2018: $10.57
03/14/2018: $11.06
11/24/2017: $10.57
11/23/2017: $8.24
11/11/2017: $11.4
11/10/2017: $11.56
10/29/2017: $11.4
08/04/2017: $10.31
05/10/2017: $10.14
04/19/2017: $11.89
04/17/2017: $11.85
04/14/2017: $11.62
04/13/2017: $11.4
04/04/2017: $10.49
04/02/2017: $12.51
03/31/2017: $12.03
03/29/2017: $11.55
03/27/2017: $11.33
03/26/2017: $11.11
03/24/2017: $10.9
03/23/2017: $10.69
03/20/2017: $10.49
01/07/2017: $13.99