I am a technology teacher and we purchased 2 of these from this seller for use in the classroom (one for my lab, and one recently for another lab). Great product and customer service! We have several hundred hours worth of printing on mine already and doing great. Shipping was always great. I even have a student building one of these kits for himself as a school project.
Do a little research and pay close attention to accuracy and calibration while assembling and it will work great. You may need to check the table level weekly, but it is easy to level. I also have an older RapMan printer with dying electronics so I purchased an electronics kit from them (same Arduino Mega/RAMPS setup as in this printer) and upgraded that machine. Great service and communications every time. I highly recommend them!