So just make it an annual-only plan. Companies that charge subscriptions vastly prefer annual payments to monthly payments, anyway. It's not just the per-tran

So just make it an annual-only plan. Companies that charge subscriptions vastly prefer annual payments to monthly payments, anyway. It's not just the per-transaction percentage that credit card processors take. Cards get declined (expire, etc), and 1/12th the number of charges means 1/12th the number of potential issues. That's why they offer such great discounts for annual billing. DropBox's cheap plan is $10/month when paid annually, but $12/month if you pay monthly, for example.