From the Stardock FAQ page -
Q: I don’t have a credit card. How can I purchase Stardock software?
A: We also accept checks or money orders in US funds (no Eurocheques, please, as they are not certified funds). Please print and use the order form at https://www.stardock.com/order.txt (also found in the directories of Stardock’s shareware products) and mail with payment to:
Stardock Systems, Inc.
15090 Beck Rd., Suite #300
Plymouth, MI 48170
USA