Its completely mad. Knackered ones ebay for hundreds when you can pay half or less for a decent import. I have no idea why either, it makes no sense. I made the mistake of buying used. One had been dropped, had its back broken and badly repaired. The gib doesn't even fit. Another looked nice but turned out to be some home build apprentice project and a bit of a waste of space. The former is being turned into a very solid base for tool grinder, the latter used as a heavy drilling vise.
I bought a decent import, finished it nicely and haven't looked back. If you treat the imports as part machined set of castings that require finishing, you get a really nice tool for the price.