Idaho Admin. Code r. 04.02.01.065
It is an unfair and deceptive act or practice for a seller to offer goods or services by representations comparing present prices to "manufacturer's suggested prices," or similar language establishing or implying base reference price comparisons, unless such reference price represents, in fact, a good faith, honest estimate of the regular price at which a substantial number of sales of the goods or services are made by comparable sellers in the same trade area or unless federal or state law permits or requires the disclosure of the price suggested by the manufacturer. CPR 65 applies with the same force and effect regardless of whether the advertiser is a national or regional manufacturer or supplier, a mail-order or catalog seller, or a local retailer, and regardless of whether the prices, establishing a basis for comparison, are advertised or pre-ticketed.
Idaho Admin. Code r. 04.02.01.065