I read CeeJay's post about where to buy authentic Balenciaga bags. How much do the motorcycle bags usually go for, and what sizes are available? I have seen the small and medium sizes. I also saw an auction up on eBay from personalshoppers for a white Twiggy. I like the shape of that bag a lot. How much does that one run? For those that own B-bags, what size do you prefer? Are they comfortable to carry and get in and out of? I wish I could find a store that sells them locally, but I don't think the NM around here does.