Ive been close to surveyors here that will say that it's tough to give you a straight answer for that. Cost is going to be determined by how much time it's going to take to get the job done. Each section of land, 640 acres, has a center that was marked maybe 100 years ago, along with the corners. If there has been a recent survey on file, close to your place, that can minimize the time involved, the job will be faster, and cheaper for you. If the surveyor has to locate the center of the section, and then find all four corners, so then he can accurately map your boundaries, this can take a lot more time, and cost to you. That's why most rural acerage is deeded as "more or less".
An easy quick job around here can be $1200
A hard one could mean $4000 to $5000.
Do some research on your own, talk with your County Assessor and ask about surveys on file in your area. If you know how far you are from the nearest recorded mark, it will help to get your estimate, and keep you from getting overcharged for work not done.