Direct labor costs and indirect production labor costs also belong in business case analysis when the case looks forward to different product sales under different scenarios. Higher sales revenues normally require higher direct and indirect labor costs to produce the additional product units sold.
The prepaid Priority Mail envelope is $4.80 and can be purchased online in a lot of 10. USPS also offers ordinary letter sized envelopes. These are also charged the cost of postage plus a fee for the envelope which is around 5Â¢. You can purchase these one by one at your Post Office or you can order in boxes of 500 that are imprinted with your return address. There are also prepaid Aerograms for International Mail. Contact your local Post Office for the exact costs involved with Pre-Paid envelopes. Source(s): 24 year Postal Worker.
How much does it cost to mail a manila envelope? The cost to mail a manila envelope will depend on the size of the  envelope and the weight of the envelope. The average cost to mail a  manila envelope that is 8X11 is aboâ¦ut $2 if the contents weigh  less than one pound. Contract attorney.