>>106245804
>I plan on getting a used card for roughly $500, and most likely settling with Nvidia
https://bestvaluegpu.com/
^Would be your best friend (filter by Used Condition, Price Range, and sort by value) is what I would normally say but since Nvidia ended up production of prior series cards early before the 5000 series ever released the used market for old Nvidia cards worth buying is all jacked up to the point that there is almost nothing to be saved over buying new right now. Check out PCBuilder's August GPU Market Roundup here to be caught up on specific recommendations (you can skim @ 1.5x/2x speed):
https://www.youtube.com/watch?v=nrks6DPJOrI

Alternatively, if $500 is already a lot of money for you to invest in a GPU you might as well hold off and save up for the Super Refresh with a huge boost in VRAM for blender in a few months:
https://videocardz.com/newz/nvidia-geforce-rtx-50-super-rumored-to-appear-before-2026