Hi,
I have good experience with Amazon MWS APIs and writing programs to call them to get data. Amazon MWS has various APIs for every purpose like download orders, inventory update, price update, product info, product price data etc. and we need to use the appropriate API for your purpose.
We have done this for many customers and we understand the MWS APIs and its comlexity.
Would like to discuss more details with you regarding this so please send me a message on chat. We can also talk on skype as I use that often to communicate with clients. I have current clients in USA and can give their reference if needed.
Please give us a chance as we have good skills in this area - Amazon , Google, Ebay and E-commerce programming for web sites and developing databases. Even if you dont choose me for this project I would like to showcase you our capabilities that you can find useful.
Thanks & Have a nice day
Rgds
Ashish.