I think the postage quote of 100 pounds is a worry, hopefully its a done deal otherwise you'll end up out of pocket by a fair bit more...Mick B is on the money....a cossie head costs about 160 pounds to air freight so this hit will be at least double that.
Some UK sellers arent interested in the vat exemption for exports and will still charge it...always need to ask the question before buying.
So when does it arrive?! Pics!!
Realisticly with it landed and in the garage its probably more like a 3 grand excercise with correct freight and duty paid.