You do know scalpers can hit Amazon too right? Supply and demand changes pricing and going by history AIBs are 50-200 above MSRP. Not doubling in price.
If you can find me a 10700 combo for 300 bucks I'll take it.
Yeah, I know Amazon, NewEgg, WalMart, and many others allow 3rd party sales. I usually filter that garbage out, tons of scams not just limited to GPUs. It's something that really got going in the last 3 years and I absolutely hate it. My wife got taken ordering freakin covid masks from China (she didn't look) when TSHTF. They've all basically become a lot like Ebay in many ways.
So the $200-$300 is the cost of an OEM rig with the 3070 or 3080 vs scalpers wanting $1500+ for say a 3080 right now.
That said my point was, if someone is going to buy from a scalper they are better off buying an OEM rig like the one below. You can put your old card in it and flip it, and it looks to me on ebay like people are doing exactly that. They are selling for $1300 - $1700 with a 2060 in them. But that's all a big PITA.
I was contemplating doing this b/c my stepson (he's 30) was asking for a gaming PC for christmas, so I had an excuse. He would get a lot better rig than I would normally get him and I'd get a 3080 or 3070. At least that's what I was going to tell myself
Unfortunately he switched to asking for a cell phone as his is malfunctioning
Example :