A client had tried unsucessfully to create a system that could pull in a seller’s sales tax data. We were contracted to create a system that would support 1000’s of sellers ensuring that the data was accurate, collected in a timely manner, and worked within Amazon’s guidelines and avoided throttling and other issues normally associated with using Amazon’s web services. The project has allowed the client to offer an Amazon collector to their clients and we are currently working with them on the collection of sales tax data with other marketplaces.