We are in early development for an Amazon version of MyCostPro. If anyone is willing to give us developer access to their "Professional" Amazon seller account (for testing) we would be grateful and it will help us to implement the new service more quickly!
you are interested, all you would need to do is follow a link on Amazon and paste in our Amazon Developer ID (which we would provide)
Note: The "professional" seller account is the one that Amazon charges $39.99/month for.
Reply here, or email me if you are willing and able to help!