Hey. I thought of making a mobile app to quickly deal with some fees math to see if a certain (apparently) cheap item is worth buying or not to resell for profit. I think we all sometimes see those low price bargains and rush to buy before they are gone just to find out that with fees included you'll have to sell them way more than expected just to break even.

You can:
-Calculate how much you'll make if you sell an item for X after fees
-For how much to sell an item to make Y after fees

Since there were already some online tools around to help with it i decided to keep it simple and focus on usability/speed, making the conversion instant (you know, on the market every second counts :)). Hope it's useful and let me know what you think.

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