A book store based on Joomla (or equivalent) aimed at to be feed by individuals booksellers. Each bookseller will have personnel access to a main page with 4-5 tabs. Each tab will display book lists he uploads. For example:
For sale items - Sold items - My inventory - My data - ...
The website will generate automatic email on each sales with the database (MySQL) table. There is no shopping cart, since the seller will then will be in touch with the buyer out of the website.
For each sale a different status will be activated in the books list preventing the book for to go to sales unless the booseller free it in the website. Yes, if you guess the website will sell used books too.