Is using 80 working days for "Procurement" after vendor has quoted 160 work. days FRAUD?

If fraud, is that a crime.  I am thinking NO, there would be too many plausable excuses, ie you thought you could expedite it or negotiate less, or thinking you could find a different vendor.  I see quite a bit of this and wonder the best way to handle it - the contractor's means and methods - do you have a right to ask to see the vendor's quote paperwork?