It all depends on how much you'r postcard weighs. The more it weighs, the more money it will cost.
It depends on where you send it from.
$.29
how much does it cost to send a postcard?How is that an answer?http://postcalc.usps.gov/Postcards.aspx says $0.28 for regular sized and $0.44 for large. As of 12/2/09
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.
Php 14.00
One Euro.
Currently, 34 cents.
The current USPS postcard rate from the US to Chile is 94 cents.
A standard 3.25 by six inch postcard requires 27 cents in postage.
2,10 E -- as of September, 2011
It depends where from and what type of mail service you wish to use.
First Class International Rate, $0.98