Amazon MWS Inventory Management Cron Scripts

We have an urgent project that consists of 3 scripts, two of which we will cron, the other to trigger manually. In either case, no GUI interface is required, the scripts may show a blank page after being executed. Please read over these details and offer you best bid to produce these php scripts. 1) Create new listings based on information from our amazon inventory table 2) Update quantities available on amazon based on information from our inventory table 3) Record sales to a table and update available stock in the inventory table Please only bid if you have previous experience with Amazon MWS.