Ingame Ebay like concept
This is an expansion on my earlier idea of in-game auction/store block
I think I drew up and idea for better currency exchange while you as an indie developer still get money from it. I suggest in the auction block/store you make a special currency like tickets for example and sell that in micro tranctions throught steam like the existing platinium ones, and use the tickets for the auction like set an exchange rate between gold/platinium and tickets so you need to use tickets for the auction which allows you to still earn money because the auction/store still needs tickets to function which can be bought or trades currency for.