Yes, unjustified price increases and unfair price gouging are illegal in Mexico under the Federal Consumer Protection Law, which prohibits stores and service providers from taking unfair advantage of consumers during crises or emergencies. [1, 2]

Consumer Protection Rules

• Posted prices: Businesses must clearly show total final prices in Mexican pesos, including all taxes and fees, and must honor those exact prices at the register. [1]
• No sudden changes: Retailers cannot change prices at the last minute or raise them arbitrarily during high-demand events or health emergencies. [1, 2]

Enforcement and Penalties

• The agency: The federal consumer watchdog, known as PROFECO, actively investigates unjustified price hikes and penalizes stores, gas stations, and funeral homes.
• The punishments: Violators face heavy administrative fines, temporary business closures, or suspension of their commercial activities. [1, 2, 3]