Recently bought some cards for fiat with some money I made selling some stuff on ebay. Kept a lot and also sold a bunch for STEEM/SBD. It's a roundabout way of getting more steem, but also upgrading myself in the game. I'm keeping a spreadsheet of the packs I opened and so far my ROI is about -40% based upon the market price for the cards. When STEEM price recovers I should at least break even on the proposition. Thinking about buying some more packs to see how much the ROI shifts with time.