Hello,
If using the coupon codes, for example set a coupon to give a 10.00 discount for items / total over 100.00 it works as expected if it is lower than 100.00 it will not apply.
However! this is a big however, if I put say 2 items in my basket at 55.00 each totalling 110.00 and apply the coupon code(value of 10.00) It discounts it to 100.00, but then if I change my quantity after the code has been applied the coupon stays in place.. so the item which should have been 55.00 is now 45.00.
As I am sure you can see this is quite a big issue as users could take advantage of many stores..