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.
However, Priority Mail includes labels and boxes that the Postal Service provides at no additional cost. All Priority Mail packages weighing 70 pounds or less cost the same flat rates. As of 2015, those rates are $5.95 for shipping a small box, $12.65 for a medium-sized box and $17.90 for a large box.