Does anyone know of an application which will monitor website changes at a secondary or tertiary level? For example, on Amazon, changes to the availability of a shoe size, or to the specific price of that shoe size, or to any menu on which I have to click manually to view. I've looked at apps such as OmniWeb, Sunflower, etc but they don't go below the primary level. At least, I don't think so. Thanks for your help.