I have a rather basic Shimano hub/Mavic Reflex (I think) rear wheel plus a cassette you can have for £20. It's true and cleanish with good bearings. The thing is that I live in France and it will cst £20 to ship. PM me if this is of any interest.
The Raleigh Tru-build ones are alright for the price. I have one on the front of my road/CX bike and it's still true after hundreds of miles and a load of CX riding.