The sweet-spot to get me to check the app specs would be 0.59. Having now watched the video, I'd assume that you would get a referral fee from GoDaddy, at which point I'd want the app for 0.00.
You need massive volume (like advertising) to make this model work--it's just not there.
Making the app paid lets me keep the service running for the few people who think it's valuable enough to pay for.
This is a better solution I think than shutting down the service all together.
I'm definitely considering an ad-supported or free version, but wanted to start with a paid version first.