EBay plugin or module for Joomla

I know there are many ebay modules for joomla but.... I run a classified site on joomla I would like a module or plugin that will allow users to enter their product ID which will then display thier ebay product on mysite this must also ad my ebay affilate id in the link so i get the commission from EPN. You must understand ebay. I don't mind if you already have a module that you modify to achieve this. Please only people who have done this sort of thing before.