We planning a multi shop site based on Opencart:
From a portal homepage you can reach different shops.
Every shop is run by a vendor/seller, who gets directly paid on his own bankaccount. The host will ask for a comission or fee on sales.
Ideal is that after approval, this shop is created automatic.
From the homepage the complete cross shop catalogue should be searchable.
Example: www.lot.my
For more info contact me by e-mail