We've heard rumors of Balenciaga discontinuing the classic City for some years now, and then it doesn't happen .. so, I'm not holding my breath on this rumor! That being said, unfortunately .. yes, the resale value of Balenciaga is certainly not what it used to be (even for those 'coveted' Holy Grail bags).
I just sold a bunch of extremely rare Balenciaga bags to Fashionphile; got a fairly decent price .. but a 'regular' City?!? .. not so much. I guess it really just depends on whether or not you just want to clean out your closet. Maybe because I'm older, haven't been working for some time (unfortunately) and the pandemic, I just want to pare down a LOT (clothing, handbags, shoes .. can you tell I'm an accessories 'ho - HA)!!
I have seen your collection! I will be keeping my eye on Fashionphile