price gouging
when a seller increases prices of goods, services, or commodities to a level much higher than is considered reasonable or fair
en-US/ˈpɹaɪs ˈɡaʊd͡ʒɪŋ/
en-GB/ˈpɹaɪs ˈɡaʊd͡ʒɪŋ/
when a seller increases prices of goods, services, or commodities to a level much higher than is considered reasonable or fair