[timharding]

Again, it's not the fixed cost. It's your per transaction pricing that has doubled so over the lifetime of your business and as you grow you'll pay 40c instead of 20c every month for every customer.

[patio11]

$2.40 per customer per year? If you can even see this difference, raise prices.

[ntalbott]

Once you hit sufficient transactions/month your per transaction fee will drop back to 20¢/transaction.