Has Logos given thought to creating an "Exchange" -- a kind of Logos eBay -- where Logos users could sell their books to other Logos users? I would assume that users sometimes buy books that they then discover they either do not want or do not use. Similarly, I would assume some Logos users would like to be able to purchase books at a discount. Creating an exchange would enable both parties to connect and grow their libraries accordingly. Logos would transfer ownership from one user to another (and perhaps facilitate the transaction?).