Here is another unfinished Sabre for sale...(or possibly the same one?)
http://www.ebay.co.uk/itm/1823889641...%3AMEBIDX%3AIT
From the pictures it looks a bit messed up and a poor quality build so I think the price is a 'bit strong'.
An incomplete kit like this with dwindling manufacturers support could be an expensive challenge for somebody. It's been for sale for a while on the owners club site at £3000 with no sale.
edit, looking at the pictures again, I think it might be the same kit that was sold on ebay back in March??