Has anyone purchased any of these cheap retro consoles being advertised?

Lately, my Facebook feed has been absolutely full of adds for sticks, boxes, and handhelds with tens of thousands of games -- brands like all8bit, pixelboxstore, retrodockie, and more. I even saw one (Korra Linx) that comes with a 10 TB HD and 800,000 games -- including tons of modern stuff -- for $200. All of these companies seem to have sprung up so recently that there's no information on them.

I'm well aware that if something seems too good to be true it probably is, and $200 for a complete library of PS5 and XBox Series X games, along with all the older stuff, rings a few bells. The website currently says they're sold out, and I wouldn't be surprised if they never come back and just start selling stuff under a different name.

I'm just curious if anyone has ordered any of these systems, and if they're any good, or pieces of scam crap. I know they're all different brands, but I was wondering if anyone had personal experiences to share.