Interesting, but not interesting enough to warrant such a steep pricetag, in my opinion at least.

Yeah, this caters to the people who don't want to fiddle with pandoc or some other Markdown-to-$format tool, but even the cost (in terms of time spent) doing that would still be probably significantly less - and result in a more valuable end-product (since there would be no arbitrary limits) - than the monetary cost of this particular service.

Yeah, it's cheaper than hiring a designer every single time I want to create a document, but who the hell would do that? I would opt to have the designer create a template once, then use that template repeatedly, which would end up being much more affordable than this in the long run.

Nice idea, but the price is going to strangle this thing in the crib.