I would ask the computer building subforum if you are going to want a budget build (would also recommend building it yourself - I know it's a pain to order and wait for parts then have to spend some time putting it together, but if you want a 500 cad build... probably your best best):
https://forums.d2jsp.org/forum.php?f=189These guys are super intelligent overall. They've always helped me with builds (since like 2012 and it's pretty much the same guys) and they can definitely give you a solid build even if you insist on prebuilt. Not that people in this sub-forum aren't knowledgeable about computers, but I think you would have better success there.
Good luck! The build you linked for $750 seems fine, but you could probably get about the same/better but with new parts if you were to assemble yourself. Once again, do whatever makes you happy of course, but just wanted to make you aware that jsp has some