I'm using P2P markets, only when I see orders where people are really motivated to sell by marking down their premium, I am happy to provide them with liquidity. I don't do large orders 100 - $200 max, most of the time the seller doesn't even have that much to sell at a certain price. It might not be the most efficient, and is slow and can lead to disputes, but that's why there is so much opportunity in these markets