About a year old Rostock Max V2 3d printer with EZR extruder, was the most updated version of the v2. Was built very well around Christmas time and has been printed with since. Have had very few problems and it has a huge print area, heated bed, fast, super accurate, and easy to work on. Has guides online to how it was built and how to download the corresponding hardware onto your computer. Will of course need to be recalibrated after shipment which the second software guide online explains. New was 99 and asking only 9. Only problem is with a connection to a hot end that stops the temp about 2 degrees below preheat goal. Can easily be re connected or at the worst replace at part. Also a great opportunity to upgrade the hotend or possibly a dual extruder. Other than the hotend connection the printer is in excellent condition with no other problems an low print hours. Great printer for the price and can use many types of filament due to the high range in temperature for the hotend and heated bed. Also has the ability to print from and SD card which is included. Overall great printer for most users and easy to upgrade as skill level increases