The cost for this permit is $220. Part one is filled out by the customer. Part two is filled out by the post office. This form helps you obtain a plus four for your zip code unique to your account as well as a Mailer Identification Number. You must submit the application to the post office where you would like the reply mail to return to. The whole process takes 5-6 days with the post office. We can help you obtain the artwork (bar code) for the reply mail by using the automated business reply tool available on the USPS web site or you can do it yourself.