If you want something quick, you may just want to pick up a pre-assembled setup since finding GPU's at a "fair" price may be hard to do. I'm currently patiently waiting for 10 GPU's to be sent to me because they are on backorder.
It's not that hard, really
I saw plenty guys selling brand new cards here just like me, plenty of people commenting, but only few actually wanted to buy after all. They end up buying same cards in store for higher price + they wait for the cards to come... AND after it they complain how hard is to get some cards...