This is a legitimate style that Coach made/makes. Do an ebay search of "Coach Lindsey" and you'll find over 400 listings for Lindseys.
http://www.ebay.com/dsc/Womens-Handbags-Bags-/169291/i.html?LH_TitleDesc=1&_nkw=coach+lindsey
If a bag is sold out and Coach doesn't expect to have more of them, they don't leave it on the website. The purpose of the website is to sell the bags online; if they aren't available for sale, why leave them?
I don't see any problems with the bag shown in the listing and if the seller reads tpf or other purse sites or even if she peruses other listings to check out similar listings, it's not difficult to know which pictures/views to show.