big ticket
From Longman Dictionary of Contemporary Englishbig ticketˈbig ticket adjective [only before noun] American English informal EXPENSIVEexpensive big ticket items such as cars or jewelryFrom Longman Business Dictionarybig-ticketˌbig-ˈticket adjective [only before a noun] informal expensiveAre they low value, high volume products, or single, big-ticket items?