Do not think 20c is trifling matter. Kopi in the kopitiams is up by 20c or more. Used to be 60c or 70c. Now it is 90c, or at the franchised outlets it is $1.30. Then bread and kaya, and eggs, also up 10c or 20c respectively.
In the neighbourhood kopitiams, some may forgo their regular kopi, even the cheaper kopi O. Too expensive. They will opt for plain water at 20c a cup.
And these people are