No preference right to purchase shall be given to any bidder upon the advertised land. If sold at all, the land shall be sold to the highest and best bidder at public auction. Said auction may be conducted by oral auction or by the acceptance of sealed bids, which shall be opened at the time of the auction. Should there be identical sealed bids, those submitting them shall be allowed to orally bid until there is a highest and best bidder. Bids must be for all of the land offered in a given tract.
N.M. Admin. Code § 19.2.14.13