From this page you can make online payments for the following OpenRules offerings:

OpenRules Item/Service	Pay with a Credit Card or PayPal
OpenRules Classic BRDMS License Renewal: Commercial License One Year Renewal	$999.00
OpenRules Classic BRDMS: Dowload Current Complete Version and All Upgrades for One Year (under the terms of the open-source GPL license)	$99.95
One-on-One Technical Support Session with an OpenRules Expert: After the payment send an emal request to support@openrules.com with your email address and a preffered timeslot	$60.00

Order by Mail. You may also subscribe to OpenRules Support by sending a check. Please send a request "We want to pay by check" to sales@openrules.com  including  the following information: Support Type, Company Name, Contact Name, Position, E-mail Address, Phone, and a brief description of your application (optional). We will provide you with the exact mail address.
Purchase Orders, Invoices, Wire Transfers.You may send a purchase order to sales@openrules.com and we will provide you with an invoice that includes OpenRules's bank requisites for a wire transfer.