The Inmate Response Letter Service is $1.49 based upon the letter that is received in it's entirety, to be paid by the recipient. If the inmate mails more than four pages, there is another PDF File created which is a separate charge. As long as the letter is four pages or less, then it's a single charge.
https://www.inmateaid.com/ask-the-inmate/please-explain-the-costs-associated-with-the-inmate-response-letter-service#answer
Accepted Answer Date Created: May 03,2016