The CCFS CuminCode FrameServer schmuck is happy to charge for his crap programming skills and lousy work ethic. Voukoder works several times faster, and is so much easier to use. Voukoder has no equal that I'm aware of. And believe me, I've looked! Especially if multiple streams and filters will soon be supported . . . Your program is vastly better and worth AT LEAST what he's charging ($15). Possibly 2-3+ times as much.
Keeping in mind that most of us paid for the NLE suites that we use Voukoder on.
One thing I would add is that a trial period of 1 week is NOT long enough. That's what CCFS is currently doing, and it did not make me happy. I've got other things in my life that need attention too, and I can't take a week off just to learn a new program. In my experience as a consumer, 1 month is a comfortable time period to figure out if a program will actually do what you need. I needed a couple solid weeks of working with TMPGEnc before deciding to buy it.
P.S., I decided not to buy CCFS. Total garbage.