The local Fry's got a handful of nVidia cards back in stock this week...everything from 1050s to 1080Tis.  You'll pay through the nose for them, of course: the 1070s were going for a bit over $500 pre-rebate (for EVGA 1070 FTWs, IIRC).  I'm not sure if they're still there or if someone snapped them up.  They didn't receive huge quantities...maybe 3 or 4 1070s and a few more 1080s and 1080Tis.

Keep an eye out for deals on used cards.  My first 1070 (a PNY that looks like a reference implementation) cost me $375 on eBay, shipped maybe three weeks ago.  I spent last weekend out of town for an event.  Before going, I checked OfferUp for my destination and found someone selling an MSI 1070 Gaming X for $340.  I asked the seller if he could hold it until I got down there last Friday; he did.  Drove down, swapped cash for the card, added it to the rig when I got back home.  I've seen some deals pop up on Craigslist as well, but I can only act on so many of them at a time.