Ok ok... so steam had a ♥♥♥♥ ton of items (mainly cards) that can be sold or turned into gems, which can be packed into sacks of 1000 and sold.. Obviously, if you can only do one of those two things, do that, but things like trading cards are more complicated. So I've made an algorithm to figure out weather turning an item into gems or just selling it is more profitable. Let's take 1000, which is how many gems it takes to make a sack, and divide it by how many gems the individual card can be turned into (lets mark that with G ). Then, multiply that number by the price of the individual card (marked as P . That number is how much you could get if you sold that card as many times as you'd need to scrap it to make a sack. Compare that number to the current price of a sack (marked with $ ). If it is lower, make it into gems, if it is higher, sell it. The equation written out is true or false inequality, .Px(1000/G)>$ . If it is true, sell, if not, turn into gems. If they are the same you can chose.