14 Ill. Adm. Code 475.350
Price Matching
Section 475
Section 475.350 Price
Matching
It is an unfair or deceptive act
to use terms "meet your best offer" or "we won't be
undersold", or terms of similar import which suggest that a dealer will
beat or match a competitor's price unless:
a) the advertisement clearly and conspicuously discloses price
matching policy and any limitations; and
b) such policy does not require the presentation of any evidence
which places an unreasonable burden on the consumer.