It's not easy. For one thing, we keep overhead to a minimum. No fancy multi-acre Silicon Valley office palaces with slides and wandering masseurs here. No business development teams. No commission-driven sales force.
Also, we try to avoid doing stupid things that make no sense just because we heard someone else made a lot of money that way. That really helps.
This is not a loss leader, a limited time offer, or restricted to only certain people. This is our business model, and it works.