You can also buy used enterprise cards on ebay. There may not be many 32gb+ cards up yet, but they'll be on there eventually. The big issue is how to cool these cards though, both amd and nvidia make the cards with fan-less heat sinks because the servers they get packed into provide cooling via their loud, ultra fast, potentially digit severing fans, but people who are salvaging these cards have to find their own solution to cool them, and fit them in a given case.