Just came across the 3 axis kits on ebay from (amongst others) industry-village.

3 pairs of supported rails, each with a pair of linear bearings, 3 ballscrews with nuts and support bearings for £215 including shipping.

Sounds very cheap, so probably all wonky, but has anyone successfully bought one of these kits and built a working machine?

http://www.ebay.co.uk/itm/SBR20-Line...0AAOSwi7RZGnWv

(apologies if this is the wrong section for this question)