I just took a look, and all of Amazon prebuilt PCs are overpriced. You can get much better specs for the same money. The best value Amazon Prime day prebuilt is probably this $650 Skytech with an RTX 3050.

However, I'd recommend reading this step-by-step guide and letting me know your budget. I'll find the best gaming PC for you, OP, u/Bucs187, and u/Brandonmac10x.