I sold a card once and recieved STEEM direct to my STEEM wallet from Peakmonsters the first time I sold, I think it was a gold..
Anyways, now when I sell I am paid in PeakCredit only and I seem unable to withdraw since it says "You need at least 0.001 STEEM/SBD in order to use wallet services" but I've no idea how to convert the Peakcredit to STEEM or set up the market to pay me in STEEM.