It might be a bit pricey unless it is in perfect condition. A NYC bag in that color in perfect condition is extremely rare. Have you looked on ebay to see what they are selling for? Lately it seems that everything I see in a thrift or consignment store is more expensive than ebay or etsy.
I hear you. This consignment shop tends to overprice things, which is a bit annoying. I'll do some searching on ebay. Plus, while I love vintage, I'm not even feeling the bone/white color right now (even though it's a lovely bag, and I do have phases where I carry around nothing but white bags!)...