I paid £240ish for VW to do mine (new key and coded to van).
I tried the lock auto locksmith who said they can do some keys but when he scanned it he couldn't do it because of the chip. Other years/makes/models might be fine but mu 17 plate couldn't be done only by VW.
thanks for the info, would you mind posting the part number on your remote? should be something like 5k0 837 202 bh, thats mine ta