I don't think it is worth buying a brand new non-WE and converting it but the current going rate for s/h ones seems to be in the £130 mark whereas the brand new ones are £200 gray import on ebay. If you get one for the £130 price then you can run it 'as is' and upgrade gradually. Some of the upgrades are reasonably cheap, the shock towers and the wide bumper for example, so they can be done relatively painlessly straight away.
