i tried a seat dealer a while ago and even gave the part number i think is
1ML 805 903
but first question asked by them was have you got a seat cupra, i answered no and he babbled about having to ask his boss and being against the law to sell if you havnt got a seat. i left my number and they never rang back, got a feeling this part has been flagged by seat head office as dealers are selling way more than they should be, so theyre trying to stop it somehow.
if i were to try again i would pick up a numberplate of a seat cupra for sale just incase and say yes i have a cupra.
hope this helps