Based on my E-commerce business experience, i would like to say / advise / put across my opinion that Apart from Setting up portal, tieing up with Vendors who supplies Accessories or a market place, Logistics across various geographical areas, etc.. all these one side and the other side is promotional of your E-commerce, this eats all your margins initially if not planned well.

E-commerce will get more money in turn promotional has to be done in many ways and the cost is also huge. The other side is very important (ie Promotional , campaign, Social Media Advertisement etc....) Many have good portal with several products but due to lack of funds for Marketing could not survive.

We can discuss more over phone if you wish.