I've got both. Kinda.
I made my own plate rack. AR500 for the targets, arms and front plate to protect the main shaft and reset mechanism, mild steel out of the scrap bin for parts I thought wouldn't get shot and treated 4x4s stuck in the ground for legs, obviously permanently located in my backyard.
This was back in the day when ammo was cheap, friends were single and I was shooting over 25k rounds a year. Guys would come out on a weekend and easily go through 2k rounds.
Well, it turns out that no matter how hard you think it would be to hit everywhere on a plate rack but actually on the plates, that's where people would shoot. Even my reset rope safely out of harms way got shredded. It got to where I spent several hours at least one Saturday a month cobbling and welding it and other mechanical targets back together.
So I ended up turning my plate rack into more of a KYL rack using rubber straps.
Moral of the story, if you buy one make sure every piece of steel is rifle rated. If you build one do the same. Expect to see it get damaged either way. And be cautious about who you let shoot at it.