You could follow the advice of many commenters here and increase prices. I recommend you increase prices on new customers, but maintain similar prices for curr

You could follow the advice of many commenters here and increase prices. I recommend you increase prices on new customers, but maintain similar prices for current customers, since they've been early adopters of your service. The danger of suddenly raising prices on existing customers (or radically changing the service) is that you might lose them (see Netflix).