Tied pubs charge up to 80p more for a pint of lager than managed free houses, a new study has claimed. TheGMB said that tenanted companies are forcing tenants to charge customers between £2.16 and £3.06 for a pint of lager that is between 7p and 80p more than a managed house. The GMB is submitting its findings to the Office of Fair Trading and to the European Union as part of its campaign to end the tie and secure lower prices for customers and better living conditions for tenants.