Would like to create a site similar to DHGate.com | AliExpress with escrow, stores, reports and so on with well documented source. Different levels of stores from free, paid, premium and so on. Payment options with various payment gateways (PayPal at least). Also, different levels of fees as a percentage of sales based on level of store.
All functions and modifications should be manageable from an Admin Panel. Site design/template should allow for easy re-skin.
Would prefer if you have a demo or a fully working project since this is not a new concept. If you have a ready to use script, quote script separately from any customisation work you think is necessary.