Hi,
The best way to build a e-commerce site is by getting the domain registered to the site TuckTail.com .Here they provide the service at low cost at low price compared to other sites.And you can build your own e-commerce website at the same site .

There are many websites providing services to build online stores or e-commerce sites. You do not need any programming or web design skills as they often have themes to choose from and simple instructions to follow. There is a monthly service fee or management fee varying from $5 to $50/month. The following sites may give you some ideas to start:
go.magento.com/
www.1and1.co.uk/Eshops?__lf=Static&linkOrigin=&linkI