FY1977, Congress returned to the use of full-year continuing resolutions for more than a decade. For each of the 11 fiscal years following FY1977, covering FY1978-FY1988, Congress enacted a. full-year continuing resolution covering at least one regular appropriations act.
1 For example, a one-year small mailbox can cost $125 to $150, while a large mailbox for the year can cost $250 to $300. 2  By the month, plan on budgeting anywhere from $10 to as much as $30 to rent a UPS mailbox.
Postage Rates. The least expensive priority mail flat rate envelopes are $5.75. These range in size from 5 x 10 up to 12-1/2 x 9-1/2. By comparison, sending a 12-1/2 x 9-1/2 priority envelope that weighs five pounds would cost $21.55 instead of the flat rate of $5.75. When mailing items over 13 ounces, flat rate options will save you money over the cost of first class mail.