Answer Question
The cost of a single first-class forever stamp to mail a single letter (envelope) is $0.49
The cost to mail a postcard is $0.35
The cost of a book of stamps is currently $9.80. You get 20 forever stamps in a book of stamps.
You can actually buy stamps online at Stamps.com and get FREE postage! Currently, it only costs $0.485 per stamp to send a First Class Mail Letter (1 oz.) with Stamps.com
What's the cost to mail a letter?
How much does a Book of Stamps cost?
How much does a Postcard Stamp cost?