Hi, I've worked with Amazon Product API before. We can use SalesRank response group to get the ranking of each product. This will need a cronjob to run at a predefined interval to check for sales rank
Relevant Skills and Experience
I work with PHP & MySQL and other web related tech since 2010, also I have about 3 years experience with Amazon API.
Proposed Milestones
$225 USD - On completion
$25 USD - Upfront Comission