Specs wise, it's pretty good. A Snapdragon 800 device for less than 15k.
However, every single G2 in the market right now has been tampered with. I'm not even joking, every single one.
They have been refurbished, modded and the casings/housings have been changed to different colors/variants.
It's a great device, but I wouldn't even recommend it to my worst enemy, considering the headache it gives you when you go home and start using it.
Try getting yourself a Nexus 5 or something, better dev support and also a Snapdragon 800. A D820 version can be had for 14-17k depending on condition.