Bro if you wanna stay safe then the garage sale area is not for you. I would suggest trying out your luck at lowyat retail shops. 6700k retails around 1.3k and you can get a decent z170 board around 500-600, all with full warranty and save you the headache in case anything happen. So even the post is not really a good deal, just my 2 cents, cheers and good luck.