Looks like Amazon Released their automatic re-pricer in Beta. To be blunt, there is a lot of finger work to make it WORK. If the Current API could work with it, Using nitrosell would make it easy.
-Minimum Price (per Item)
-Max Price (per Item)
-Rule name (per Item)
Those 3 fields would be all that was needed to get it to start working (Again, if the current API Allows it)