I've done something very simliar with my big fat man hands.
The stealers want to rob me of £130.00 for an 06 twin light for my FR, but after a few weekends searching i found one in the local salvage yard for £35.00 and it was like new. But i must stress it took me ages to find one though, as all the
ibiza i found all had front end damage (now thinking about a brake upgrade!!).
Oh and the other thing, the local VW garage quoted £81.38 exc vat for the light how can SEAT charge £50 quid more!!
And you'll have to have the bumper off to get the light out!
Good luck finding one mate