HA! .. I’m with you on that .. it really bugs the hell out of me when things are missing, especially the mirror!!! Well, the strap too!! Especially if you’re paying a fair amount, then it’s gotta have the goods!Would you buy a Balenciaga City without the mirror but with the strap included? Condition is great/very good but it's missing the mirror. Not that I use a mirror very often, but for the money paid, I'd expect it to have all the accessories. No dustbag either.
I personally wasn’t a fan of the Vélo because it kept on smacking my hip (I wore it cross-body), but as far as fitting all my work stuff in, it was a much better choice than the City.