Implement auto sell function? Much faster than checking every item after a win or going through your collection. Protect the user by never allowing it (yes it) to sell more than what can be equipped at max in a party using the current rules. Like 12 arcane items, 3 arcane skills, 3 boots. etc... Represent it by using boxes where user punch in numbers, red numbers BAD must punch other keys. Or use sliders capped at the minimum values etc... Make it happen.