A lease pursuant to § 40-23-24 shall not be subject to the provisions of chapter 7-30, and such lease may be for a period of not more than ten years, with the lands thus leased not subject to sale to other parties. The lease may contain a provision for the privilege of purchase by the incorporated grazing district at any time during the term of the lease at such appraised price as shall be determined at or prior to the origination of the lease.
SDCL 40-23-25