Just a heads up -
I posted a review for our frost free tap a few years ago, and it still remains the most useful thing we've ever bought for the farm - it just works, and is ten times better than having to carry water out from the house for animals during winter.
Anyway, I was trying to explain the concept to a friend just now, and
came across this one for sale on Ebay at the bargain price of just over £50 delivered. It requires a 3 ft bury depth, which is a bit more than usually required in the UK, so only buy it if you don't mind digging a really deep hole!
I have no connection with the seller, etc etc, but I'm sure somebody on here will snap it up quickly!
Cheers,
Womble.