Create a web app that maintains stock levels in eBay.

We need someone to create a web app that connects to our eBay account via API and adjusts our stock levels. It needs do the following: - keep stock all products at a quantity of 10 units, so when someone purchases something and the stock level dips, it gets adjusted back to 10 - when stock level is set to zero, the stock level is not auto adjusted - have a section where we can input eBay numbers which are excluded from the auto stock adjustments It also needs to have a basic GUI. It will search all products in the store and adjust them accordingly. The script needs to run every x amount of time (adjustable) and must not be resource intensive. Please let us know if you can make this. :-)