Sure, cheap/thrifty whatever. However, I'd rather pay for the dev account when I actually need it. I don't see a huge benefit to paying $100/year while in development. I can accomplish everything I want without it. Once I'm ready to publish the app in the app store, I'll gladly pay $100/year.
Ya I could see that, however I should note the app is only a part of a bigger picture of products. I've also been developing it for the past 4-5 months but only started showing it to people lately. So perhaps now would be a good time to buy a dev account but I still haven't felt the big need. To each their own.