I started with metal lathes and have three, each dedicated to doing certain tasks. In the last few years I acquired two Porper lathes to add to my shop and have found uses for both. One of the Porpers required a full rebuild and is the early model with no carriage and it has become my sanding and polishing lathe. In my opinion they are OK at a lot of things and make good secondary lathes. If this machine is in premium condition and has all the accessories then 4000 seems to be about what they are going for.