We need a website which works and function like [url removed, login to view] and includes following features.
Home page layout with categories and customization display of products, just like ioffer.
Seller registration should be easy and quick and they should have seller central from where they can upload products and watch their sales and revenue..
Seller should have store system and different subscription options, they should also have their own product categories, which should be independent from main store categories.
Offer system like [url removed, login to view] where buyers can send offers to seller and sellers can accept or counter offer. There also should be a review/feedback system for both buyers and sellers alike which include ratings too.
A community/forum system should also be added where sellers and buyers can talk and discuss about things relating to buying and selling on the site. A place where they can form groups and communities and talk about stuff.
The back end should have the option to disable/ban/approve sellers. Check their sales reports.
Product listing and management should be easy, so that the products uploaded by sellers can be easily managed.
Revenue should be based on subscription types, featured listings, and final sales value. A custom payment gateway has to be integrated for which API would be provided.
This would be an ongoing project starting from this much followed by constant updates and up-gradation, which will be paid for separately.