Hehe, 'Gypsy Vanner' - just a fancy term for 'carthorse'.
I understand that rarity = expensive, but really, it's cheaper to buy one HERE and SHIP it than buy one in the USA at the moment. It's a little bit crazy.
You could probably even get one for free here. Not a GOOD one, mind you, but from what I've seen of the gypsy stallions standing in the US and being represented as the 'best' of the breed, the exportation seems not to inculde what the UK would consider its best examples of the 'type' (never been a breed here, just a plain old cobby pinto grade horse). Some British horse dealers are being very very clever, and a little bit exploitative.