Hi
I can do the development for your ecommerce site within 30 days. This price includes the cost of website theme which will be the best in class and features.
1) 100% responsive
2) Full retina display
3) Multiple layouts for different category types
4) inbuilt payment system and many more
Check my review in freelancer.com. I also have working script similar to ebay, amazon, flipkart & Myntra
Currently I have done similar development on websites as mentioned below.
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Please let me know if you like my work in progress and would like to discuss about our requirement in details.