No specific amount or range of amounts may be stated in an advertisement as an offer for a trade-in if the amount or range of amounts stated is contingent upon the condition, model or age of the prospective purchaser's vehicle, unless those conditions are stated in the advertisement. The use of phrases such as "up to," "as much as" or those of similar meaning, are not considered to be adequate explanation.
Nev. Admin. Code § 482.170
NRS 482.160, 482.351