Hello !
I have previous experience with Amazon Api, i have create standalone ( Visual Basic) and Web based ( PHP) programs, that get data from UPC ( EAN) list , that connect to Amazon VIA AWS Api ( LookUp function) that add some additional info from Amazon MWS api.
Will be happy to work with You. Just send me more details, i can make prog that will work right from excel , You will just need to press button.
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If You need somebody who can manage really difficult thing, I am right person, I am not indian who use recorded or stolen scripts, i have good background, and all my scripts work with 100% accuracy and performance.
Hope for Your respond,
Regards,
Vlad.