There is little to no customer support and a medium failure rate on parts . You may burn out a control board or stepper motor and you would have to replace it yourself . They do work great for small prints and learning about 3 D Printing , you will want to add a steel frame at some point prusai 3 steelframep 3 steel . html and replace the control board with a more standard ramps board ' d recommend the toolson build for the steel frame with the AWC couplers . reference we purchased 3 for $ 125 $ 250 each and lost a control board , a bed shorted , a stepper and an extruder within 6 months . A friend purchased one and lost a control board within 3 months . So out of 4 purchased 4 broke an electronic component within 6 months .