[throwaway2016a]

That is really good to know about Cloudflare. CDN cost an important thing for anyone to take into consideration when they price their free/paid tiers and something that not everyone does.

I always try to price fee tiers so that one paid customer pays for about 100 or more free users and aim for at least 5% conversion of free to paid. It's not a hard-fast rule but a good starting point. If I can't hit that (even after crippling the free tier) I just drop the free tier altogether and make it a free trial instead.