Retail gasoline lessee‐dealers have lobbied for the right to purchase their gasoline supplies from sources other than the lessor‐refiners with whom they have contracted. This article examines a unique data set of gasoline prices in Los Angeles, along with corresponding market‐ and station‐level characteristics, to gain some insights into whether the proposed "open‐supply" legislation would likely lower the prices charged to consumers. Controlling for market‐ and station‐level characteristics, the authors find that stations with the most alternative sources of gasoline supplies have significantly higher retail prices, casting serious doubt on the claims made by open‐supply proponents. (JEL L0, L1, L4)