Hi poslondon,
We are a software development firm from Vietnam, since 2007 and I have read your requirement already.
You need mobile e-commerce, with back-end data administration. And your mobile e-commerce site will integrate with social media like Facebook, Twitter, ... also integrate with blog, news which can be administrated in back-end.
We haven't produced this mobile e-commerce site before, but we are able to show you demo that we can finish it for you. Please check my proposal as below:
1. Cost: $100
2. Time: 30 days
3. Upfront: 20%
4. Delivery: app + source code + docs
Please give us the chance, this will be our first project in Freelancer.com. I need your high rating rather than just $100.
Best regards,