1k won't go very far in this inflated market. Just keep investing n wait for prices of gpus to come down.
Or get decent deals on GPU's. I'm still seeing good deals on NewEgg. B&H is a little more expensive the past couple of weeks, but whatever you're buying, you have to act fast. When they announce that they have stock, they're gone in 5-30 minutes.
Look at MSRP of the card. I wouldn't pay more than 10-15% higher than MSRP for any gpu right now. Certainly do not overpay. You'll regret it later.
I'll be building my fifth 6 gpu rig this weekend. 2-2-2 mixed 1070ti, 1080, 1080ti rig, but with the Newegg purchase limits and getting the best prices from them, it was the best I could do.