I just bought the OTC version 20mg 42 capsules at Bj's Wholesale for $21 and some change. Im not sure if you have one in your area or not. But all of those wholesale clubs have to allow you to use their pharmacy services without being a paid member.

ANother option is those health insurance cards you can sign up for on the internet. Some are free, some cost small amounts.
If you both are going to be on monthly rx's, you could always check with one of the hospitals near you. Most major cities have a few hospitals that offer free care programs that cover regular dr visits(at their clinic) and prescriptions at the pharmacy.