I enquired about one the other week and VW wanted to charge me ?38

, in fact pm LEN405 as I'm sure he said the VW garage by him stock them, some of the VW parts people aint got a clue. You could try GSF or Euro Car Parts they may stock some after market ones. Just another thought, are you sure the relay is dead ? Try taking it out of the fuse box and cleaning up the contacts, I had this problem a few weeks ago and the AA cleaned the terminals up and it worked ok but I had to put mine in the garage to have the fuse box lowered slightly as the contacts on the relay was not sitting flush so it was a bad contact and this was burning the connections out and creating a load of muck between the connections.
Or try these people in Leeds, they fixed my fuel pump relay the first time round and replaced it so they must have got it from somewhere. they are called Unicar and the number is 01132 021070. Hope all this helps.