Every retail mercantile establishment shall conspicuously post its refund policy as to all merchandise on a sign in at least one of the following locations:

a. Attached to the item itself, or

b. Affixed to each cash register or point of sale, or

c. So situated as to be clearly visible to the buyer from the cash register, or

d. Posted at each store entrance used by the public.

L.1982, c. 29, s. 3.