I am not trying to sell mine, however, I will offer the following advise. If you can't afford a new one be very careful buying a used on one. Many people have made modifications without knowing what they are doing, which will cause many problems. In addition over the last four years Porper has upgraded all the electronics, the Motor, and also made many other changes to these machines. Many of the current parts they sell may no longer fit certain components of older models. However, the older lathe can be sent back to them for upgrade. I recently had to send the control box and head assembly of my repair lathe back for a new circuit board, and while it was there they completely upgraded the whole thing for me. I have been very happy with my machines and the service I received from Porper.
You may also want to contact a member of this forum about a B-Lathe, his user name and his name is Michael Webb, Michael is a custom cue maker and he knows as much as anyone about these lathes. He may also have a lead on one that is for sale.
In the end though it may be best to just buy one new, that way you will have a upgraded machine and no problems.
Take care