Hi, thanks for this awesome mod!

I installed it and it works perfectly... except for one thing.
Using Handyman's Cash mod, anytime I set an item's sellback price in the ACP, it's always reset to $0. Sorry if this issue has been brought up before, but is there a fix?
EDIT:
After buying an item and selling it back, then setting a sellback price in the ACP again, I bought it again and am getting:
SQL ERROR [ mysql4 ]
Out of range value adjusted for column 'cash_amt' at row 2 [1264]
SQL
UPDATE phpbb_cash_amt SET cash_amt = cash_amt - 80 WHERE user_id = '2' AND cash_id = 1
BACKTRACE
FILE: includes/db/mysql.php
LINE: 158
CALL: dbal->sql_error()
FILE: includes/functions_shop.php
LINE: 112
CALL: dbal_mysql->sql_query()
FILE: includes/functions_shop.php
LINE: 267
CALL: cash_mod->charge_user()
FILE: includes/functions_shop.php
LINE: 288
CALL: item->prebuy()
FILE: shop.php
LINE: 63
CALL: item->buy()