Section 75C. Whoever sells or offers to sell a gift certificate as defined in section 1 of chapter 255D, which imposes a time limit of less than 7 years within which such certificate may be redeemed, shall be punished by a fine of not more than $300. This section shall not apply when the purchaser of the gift certificate is not obligated to pay for it until the time of use. Whoever, after having sold a gift certificate refuses to redeem the certificate before it has reached the expiration date, shall be punished by a fine of not more than $300.