Any person to whom is sold household furniture, appliances, or floor covering merchandise, in the course of an unlawful trade practice, as hereinabove defined, may, at the person's option, or on discovery of such unlawful trade practice, and on due notice to the seller, rescind such sale; sue, and recover back from such seller the price, or any portion thereof, previously paid by such person to such seller; provided, that the right of rescission created herein must have been exercised, if at all, within a period of twelve (12) months subsequent to the complained of sale.