If you’re using it at home just for working out then get on eBay or something and buy the cheapest thing you see.
quality (welding versus bolts) grade of steel and such shouldn’t be a concern unless you’re squatting 200 + for 20 rep’s.
A lot of tyros get illusions of grandeur and go and buy what their heroes use, then find out sooner or later realize you need the right raw materials to succeed, the sell it all bitter and twisted.
if you want to compete in powerlifting join gym that specializes in it.