Build an Online department Store

The website the main aim is to acquire customers from shops and put their product online on our website the aim of our website is to give the shops their own website without going through all the cost of building their own website and managing it With every shop they must receive their own URL for example if I had a shop called Mr whippy they have to receive a URL saying [login to view URL] which would be there only shop in which will have only there products on there. There should also be a feature for people to buy the product online and pick up from the shop in which will have an invoice they can print of in may be able to be scanned at the shop and removed from the product inventory. these are just a few of the features i would like so if you feel like you can complete the order please acept