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Commercial Base Pricing

Kansas State University now qualifies to ship through the USPS using the Commercial Base Pricing (CBP). Before, the rates used have been the USPS' retail rates. The commercial base rates are cheaper than the retail rates. The services that are available to be shipped Commercial are the parcel services such as Priority & Express Mail. This does not include the cost of first class letters & other USPS services. Central Mail Services will be taking the initiative to continue to ship your packages using the most cost effective & time effective method. Be advised that when you ship personal mail at the KSU Contract Postal Unit you will be charged by the retail rates. You must be shipping through Central Mail Services to take advantage of these rates.

Commercial base pricing applies for domestic (within the United States) Priority & Express Mail only. For International Air Mail rates see Priority Mail or Express Mail.

Priority Mail Commercial Base

Priority Mail Express Commercial Base


Priority Flat Rate Commercial Prices
Priority Mail Flat Rate Envelope 12-1/2" x 9-1/2"
Priority Mail Legal Flate Rate Envelope
Priority Mail Padded Flate Rate Envelope
Priority Mail Small Flat Rate Box 8-5/8" x 5-3/8" x 1-5/8"
Priority Mail Medium Flat Rate Box (FRB1) 11" x 8-1/2" x 5-1/2"
Priority Mail Medium Flat Rate Box (FRB2) 13-5/8" x 11-7/8" x 3-3/8"
Priority Mail Large Flat Rate Box 12-1/4" x 12-1/4" x 6
Priority Mail Large Flat Rate Box (APO/FPO Destinations) 12-1/4" x 12-1/4" x 6"
Express Flat Rate Env. Commercial Price
Express Flat Rate Envelope12-1/2" x 9-1/2"


If you have any questions about pricing or options, please call Central Mail Services at 785-532-7751.