Articles normally sold as a unit must be sold that way during the time period specified in Section 7-9-95 NMSA 1978 to qualify for the deduction. They cannot be priced separately and sold as individual items to qualify for the deduction. For example, shoes normally sold in a pair for $180 cannot be sold singly for $90 each to qualify for the deduction.
N.M. Admin. Code § 3.2.242.8