I would recommend widening your area you are willing to travel, you save yourself a few pounds and that GTi world in Edinburgh is very expensive but they seen to be the only place in Scotland that has a decent collection of GTi's but they are just a small part of the main VW dealer there.
Its not really a big deal to buy a car down south and would possibly save you a few quid as well and the good thing is the further you travel to pick up your car the longer you have to enjoy it on the journey home.