20 years ago we were paying £50/kg for basic PEEK, it went to £1000/kg for the good stuff that was used for human implants etc. This was in injection molding. To answer the question above, (even if it was asked 4 years ago), it does machine very well. I have some here that I mill / turn occasionally.I´m quite keen to try it on my 3D Printer, but the price puts me off!