Way too many variables involved to give a concrete answer. Location, acreage, types of animals, year/ seasonal, place to stay / primitive, quality of animals, etc.
Usually, the more acres, the less you will have to pay per acre.
In general, you should expect to pay the following:
East Texas: $ 5-10 / acre.
Hill Country: $ 10-15 / acre.
South Texas: $ 12 and up.