From Longman Dictionary of Contemporary Englishscalperscal‧per /ˈskælpə $ -ər/ noun [countable] American English BOSELLsomeone who makes money by buying tickets for an event and selling them again at a very high price SYN tout British English
Examples from the Corpus
scalper• Complimentary tickets to the event were sold by scalpers at five dollars each.• Gretzky had none the less produced exactly the sort of moment that enabled scalpers to fetch hundreds of dollars for tickets.• Remember, too, that he is hardly ever a monopolist: he works in fierce competition with fellow scalpers.• Ken Behring might precipitate the first documented instances of scalpers selling Personal Seat Licenses at below face value right before kickoff.• Three days before the race, scalpers were trying to get face value for tickets.• Remember that the scalper sometimes loses money. 