In case it's of interest to anyone in a similar situation, I got my tablet back yesterday in perfect working condition, still unlocked. When something is done well I like to encourage it by pointing it out. The service was fast and friendly and no issue was made of the tablet being unlocked. I had to decide whether to RMA it or return it to the eBay seller, and I really didn't want to make the seller deal with it since it was working when they sent it to me. (Good ratings - I trust them.) It worked out well for everyone.