Buying a prebuilt desktop, 8GB VRAM, ~$500 budget?

Noticed there's a good amount of discussion on building custom setups, I suppose I'd be interested in that, but firstly was curious about purchasing a gaming desktop and just dedicating that to be my 24/7 LLM server at home.

8GB Vram is optimal because it'd let me tinker with a small but good enough LLM. I just don't know the best way to go about this as I'm new to home server development (and GPUs for that matter).