How much will the kenworth t700 cost?

Not sure when you asked this question, but 120k is what you could expect for a typical base model.

Currently, Kenworth is looking to shut down the T700 production line (thankfully), phasing it out for the T680. Last Word I got was that there are four T700 bodies remaining, and, once they're sold off, the T700 line will be shut down. If you wanted one, you can probably get an outstanding deal on one of those remaining four.