abs159

Hello Reddit! We run a brewery. We have to collect and return bottle deposits. Does anyone know how to have a "deposit" item? Or, perhaps an item with a negative value? Currently, when a person buys a bottle of beer, we charge them $x for beer and $y for deposit, two items. Sometimes a person returns with bottles and doesnt buy anything, or they return and buy 1 unit of beer ($x) and return 2 units ($y*2) for deposit. Can square handle this scenario?