XTOOL X-100 PAD, any good?

Want to buy an original XTOOL X100 PAD, but is it any good?

Sources from XTOOL factory are here. 

(original x-100 pad is authorized to obd2 express, you can refer here also

http://www.uobdii.com/wholesale/xtool-x-100-pad-tablet-key-programmer.html

Source:
http://www.uobdii.com/wholesale/xtool-x-100-pad-tablet-key-programmer.html