When I saw this and clicked it, I was preparing myself for a bootstrap-in-production-code abomination, but was pleasantly surprised. The design and interaction on this site are gorgeous and not boostrapped, and the tool looks really nice for putting together prototypes. With all the horrible bootstrap default production sites i've seen lately, I've developed a pretty signficant hatred for the framework. But sometimes…
Thanks! We did build a lot of this with bootstrap itself, using custom LESS. I do disagree that bootstrap doesn't replace unique design and code. Lots of great websites have a standard set of interface elements, and bootstrap makes this extremely easy. Just add your custom styles and you have a unique site built on a solid CSS framework.
The problem is so many people don't do that. They just leave the stock bootstrap there. If you can't even be bothered to change the colors from the templates, how am I supposed to take your company seriously?
Re: pricing. It depends how awesome you plan to make this. As it stands I'd probably pay $10 a month, maybe a bit more. If you fully pimped it out like Balsamiq has done for mockups - the sky is the limit. And if you had no competition for a bunch of your features - I'd actually prefer you charged more and had fewer customers, so everybody doesn't roll their eyes when they see something I built with Jetstrap, like they are doing now with Bootstrap (that assumes you get around to LESS integration...hint hint!).