CATVOS 4″ and failed wheel bearings ~300mi

I’ve put 3-400 miles on this CATVOS 4" lift, I went to service it today and both rear wheel bearings are loose.

Thinking it’s just the nut backed off, I put the big impact on it, went nowhere. It’s failed bearings.

Called CATVOS and he said "they are just factory bearings and you are on your own".

Kills my weekend. 🙁

Anyway, are there any better and less $$$$$$$$ than the factory bearings out there ?