I went the cheaper way.
I already had the pass card, but I brought a mk4 remote off ebay (£10) and a new ID40 chip(£2.50 for 2), then went outside with opcom and coded it in myself.
Then I brought 2 MK5 conversion fobs (£5 each) and another 2 MK4 fobs (£15), took the internals out and did myself a MK5 key conversion.
