from the website's FAQ section
To Order CSM Merchandise:
www.chromeshopmafia.com,
or 417-627-0004
Do you take money orders?
Yes. Please send money order, along with your name, shipping address and telephone number to P.O. Box 1691, Joplin MO, 64802-1691. Add $10.00 to cover shipping.
call that number and see if you can order over the phone. if they don't sell them in truckstops another option would be to go to one of the
events listed here