Itai Ater, Oren Rigbi, 20 January 2018

The ability to compare prices openly and easily is widely thought to foster competitiveness, but mandatory disclosure of pricing information can also facilitate collusion between sellers. This column uses evidence from before and after the introduction of price disclosure regulation in the Israeli supermarket industry to evaluate how price transparency affected food prices. Mandatory disclosure decreased the dispersion and, to a lesser extent, the levels of prices. On average, Israeli consumers saved about $27 per month thanks to the regulation.

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