Hiya... why is the mileage putting you off? You want one cheap, you have to accept that its not going to be a mint one with hardly any miles on the clock, otherwise itd be up for £18k+. If youre saving a couple of grand, then surely that means you can put anything wrong with it, and still be up on the deal...
I guess the other thing to do is go and see one and haggle with the seller. If its the cheapest mk2 for sale then dont expect them to lower the price, as they know theyll sell it if you cant buy cheaper, but if its maybe £500-£1000 more than this, then show them ads for a cheper one available, you have some leverage to get them to drop the price!