I’ve repaired a eufy vacuum without issue, pretty easy to find repair parts as others have mentioned. I replaced a wheel assembly that wasn’t working quite right.
Repair shops will refuse to look at them outright; pretty frustrating they wouldn’t take my money and I had to do it myself. But I think that was categorical for all robot vacuums.
In general though, robot vacuums as a category are improving so quickly I doubt repair is the right options many times. A 10-year-old (or even 3-year-old, because they were always so behind) Roomba is almost like running a 10 year old Intel Mac in 2025.