I'm trying to resell Steam games purchased as gifts. I noticed a few other threads where unused keys for games that could be activated on steam were being sold, and this seemed like a more straightforward way to go about it.
This could be quite good if you offered to buy games for countries like Australia who like to censor the hell out of games. I'm not sure if gifts transfer to the actual game, but you could maybe offer single accounts with single non-censored games for BTC.