To be fair they are kind of worthless already

Here are some numbers I looked at over the weekend. The Flower/Ensilica/whatchamacallit stuff that GAW's new miners seem to be based on are about 4 months out (October). If you look back four months to February you'll see the Gridseed cupcakes were selling close to $300 each, a staggering ~$800 per MH/s. Now you can get Zeus for ~$70-80 and SF for ~$100-110 per MH/s. That's a nearly tenfold decline in price in four months.

It's not impossible then that come October we'll have IN STOCK / NOT PRE-ORDER hardware at $10 per MH/s. No, the Fury probably won't be selling for $12, but the next one up that's ~12 MH/s could be around $100, and the SilverFish 28 MH/s could be around $300, and a handful of other vendors could pop up between now and then. Anyone getting ready to put down $20 per MH/s on preorder hardware needs to weigh it really carefully, including power consumption, inevitable profitability decline etc.