Shoping, Deal, Cashback & Coupon Site

I need to make a cashback and coupon site such as [login to view URL] [login to view URL] [login to view URL] Where the new products and deals can be auto updated using the API of the relevant stores like flipkart, amazon, shopclues etc. The coupons and other deals can be entered manually also. I think there will be several scripts already in the market to keep the cost in [login to view URL] you have developed any such site in the past and can show me the domain you have created... it will be easier for me to decide. Please open PMB to discuss more details and budget. I'll only consider who has already worked on the similar projects, have the script and can show the demo link