It is an unfair or deceptive act to advertise that any vehicles are being offered for sale at a range of prices or at a range of percentage or fractional discounts, through the use of the terms "As Low As" or "From," or terms of similar import, unless:
If at least 5% of the vehicles in the advertisement are offered with at least the largest advertised discount, it shall create a rebuttable presumption that a reasonable number were offered with at least the largest advertised discount.
Ill. Admin. Code tit. 14, § 475.390