Baasil looks interest. I've also never heard of it, but I have heard of your competitors—thanks to the marketing/sales which their higher fees pay for.
If you're actually planning to grow a business, you need to cover acquisition costs in your pricing. For many businesses, CAC is by far the biggest expense.
In my view, paying to advertise such a service is equivalent to a farmer paying to advertise his wheat.
Nobody really wants their product to be a commodity though, as that means low margins. Fortunately, software products tend to be complex enough that even if there are generic product categories (e.g. "email service provider"), there are still ways to stand out. Even the "pub/sub service" market has quite some variety.
There's a reason why other companies charge a lot and have "fat" orgs.
Also, "leaving money on the table" does no one good. Let businesses with budget pay you money. If anything, the money lets you improve the product for your customers - everyone wins.
Anyway, so I got together with a co-founder (a big open source contributor like me) and we built a cheap realtime pub/sub (push notification) service: https://baasil.io/#!/plans
We are like a tenth of the price of some of our competitors but our profit margins are still ridiculously large. I guess it's because we don't have to give our profits to hundreds of idle investors and board members. We just have to feed a couple of hard-working engineers (myself included).
I look forwards to this new age of frugality and restraint with open arms.