Site offers parts without having a double check with client when more than one level of same part for same vehicle is distributed

As a normal diy guy i have just encountered extreme frustration with this site. We all try to save a buck so I looked online for a specific model year bmw x3 right hand drive (Sa) 2006 model year and e83 model number. From a brief picture it looked the same. Only to find that Fruugo sells two different switches for the same model of vehicle.(which i find impposible to believe, if so why was i as client not alerted) With postage and returns being costly i opted to ask after several complaints for a discount to buy the "correct" part.