How much does a certificate of mailing cost 2017

According to the United States Postal Service (USPS), the cost of a Certificate of Mailing (PS Form 3817) in 2017 was:

This information is based on the USPS's 2017 Domestic Mail Manual, which was effective from January 22, 2017, to January 21, 2018.

Please note that prices may have changed since then, and you should check the USPS website or consult with your local post office for the current pricing information.