To come up with a figure, I would want to know what type of cable we are talking about. Since the type of wire can easily double or triple the price, and the type of termination can also vary it is a little tough to guess.
If I am 'guessing' on a simple drop, it would include one cat5e wire (average length of 120 feet), termination at the work station outlet and punched down on a patchrack in the telecom closet, tested to 100 Mhz, I would guess around $120. That number can vary from 60 to 200 depending on wire (level 3, cat5, cat6, plenum) what the terminations are (specific brand of jacks, patchrack, shielding) and how many I am doing in one trip. If it is a job of 128 outlets, the price could likely be adjusted down. If I have to drive across town, haul stuff in, move desks and furntiture to add one jack, the price may go up.
It's real hard to guess accurately with no specifics.
Good Luck! It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com