‘Why does posting a letter cost so much?’ April 5, 2023 News by Leave a Comment on ‘Why does posting a letter cost so much?’ On April 3 postage rates increased again – First Class stamps by 25p, from 95p to £1.20; Second Class by 7p, from 68p to 75p; and International by 35p, from £1.85 to £2.20.