is it just a basic service?
at this stage of the cars life it wont matter as such if its not done at a VW garage, but it would be nice to get it done at a good independent and keep the service book stamped and up to date.
other than that, buy all the parts you need in a motor factors, keep the receipts and put them with the service history and get a decent mechanic to do it as a nixer. that way your still keeping a record of the service and proof of work carried out as such.
you could also try getting some quotes from VW dealers north of the border.