iBuy iRobot Blog Guide

I have seen many ways to get high search rankings on the regular search engines such as Google and Yahoo but have not seen anything to say how search results are generated when you do a search on Amazon.com. I want my product, the RoomBud costume cover for the iRobot Roomba to be returned high on the search list when someone searches for “Roomba” but do not know how Amazon determines what is listed and in what order

I can buy a new, never opened irobot roomba through Amazon.com, cheaper than through the irobot website. Will there be a warranty in place?