One cent
USPS.com says it costs 98 cents to send a postcard from the US to Australia.
The current USPS postcard rate from the US to Chile is 94 cents.
It was one cent to sent a postcard in 1920. The rate was established in 1898. It remained in effect until January of 1952.
As of January 20th, 2009, the rate to send a postcard from Canada to the US is $0.98. Reference: http://canadapost.ca/Personal/RatesPrices/Send/PostageStamps.aspx
One Euro.
44 cents
It will cost approximately 98 cents to send a postcard to France from the US. However, the postcard will take about 3-4 weeks to actually arrive to its France destination.
It all depends on how much you'r postcard weighs. The more it weighs, the more money it will cost.
2,10 E -- as of September, 2011
28 cents
This is mudder fn bul if i knew that answer I wouldn't be on here
To send anywhere internationally from Egypt is 2.50 LE (October 2010)