Hey, it looks like that deal is bs, which is what I thought. It's funny you say that because I'd rather spend $60 for a new unit than buy a used one! Hahaha! I understand that 3DR will cover it but I'd rather avoid that hassle if I could. I used to work for Best Buy and I've seen them literally take returned items and repackage them for sale without so much as an operation check.
Re the $150 Amazon deal, if you look now those dealers are off the Amazon list. Clearly BS/scam.
As to "refurbished," it can mean anything. Any retailer can take a used item, clean it up and re-sell it as "refurbished." Buying refurbished from 3DR likely means you will get a Solo that's been function-checked, parts replaced, and cleaned up for re-sale, plus warranty. From Best Buy, they are probably returns that are looked over and re-packaged (because they don't have access to 3DR parts), BUT, if they provide some form of warranty they may have a degree of reliability. After all, we know Best Buy will be around longer than 3DR, although I don't know what kind of warranty they provide with these "refurbished" Solos.