It depends on where it is going. So for example if it is going to China it would be $0.90. Each county has a different amount. Click on the link for a postage calculator.

when I labored on the placed up place of job enterprise some years in the past… a international letter became into as quickly as $a million.25 A Postcard is comparable value as a time-honored sized letter. Now it would desire to be $a million.50 or so… yet postage doesnt go up a lot over the years (it took an prolonged time for 45c to get to 50c) and once you ensure you placed an “air mail” sticker on it… (or merely write it on close the stamp) it is going to get there rapid. (it is from Australia to England, sorry I typed it then realised you asked the incorrect way around, yet submitting it besides on your records) commerce value is mostly a million.5 cases kilos into an Australian dollar – so probable 50p?

Usually 50 to 70 cents

i believe it’s up to 27 cents now. last time i sent a postcard though it was 23… a couple years ago.

put two regular stamps on it, that should cover the postage