Ah yes, that's a bug in SMFShop. For now, you can manually change the setting through phpMyAdmin.
Go to the smf_boards table, and find the board. Then, click the 'Edit' button next to the board you wish to change. Find 'countMoney', and change it from 1 to 0.
Please reply here if you need any further help. This bug will be fixed in the next release.