I have serious doubts of it being a Cannondale. Cannondales have nice flowing joints, not big visible welds like that. Also looks like it has stamped rear dropouts and a nutted rear axle. I also just noticed it has Gripshifters next to the stem. This is a relabeled GMC Denali. About $150 at Wally-World. The seller is not just a dick, but a crook as well.