The ethereum mining craze should end soon. In ~2 months, ethereum gets an upgrade that removes all of the transaction fees that miners get in addition to the normal block rewards and uses them for burning eth instead, making it deflationary. This effectively cuts eth mining profit in half, so the market is likely to flood with GPUs after that.
Nice thought anyway, hope it's true. It's totally insane what 30xx cards are selling for on eBay and I'm referring to successful auctions, not just listing prices.
Playing: Xenoblade Chronicles DE, Ys IX, God of War
Watching: Lupin, You me and the Apocalypse, Days of Thunder