Can I strongly, strongly, strongly suggest that you rethink the pricing and value proposition here? You're chasing away good clients because anyone who has ever done mobile or programming thinks that custom development offered for $99 implies not-great-things about your programming savvy or likelihood of following through on this deal. The "wantrapreneurs" (hate that word) you appear to be targeting will disproportionately have wildly inaccurate expectations of what you're selling for $99, because you appear to be promising them the fantasy of having their business come from idea to actual fruition at the cost of $99.
I am having difficulty finding strong enough language to communicate the unwiseness of this business model vis-a-vis accurate worries like "If you’re not careful, you may end up spending an exorbitant amount of hours on a project, driving your hourly rate into the basement." All the words I'm reaching for seem hostile and yet they do not nearly capture the scope of how bad of a decision this is.