I think your pricing is honestly too low. First, nobody here is complaining that your pricing is too high. Second, when evaluating pricing, it's useful to ask "what serious customer would pay $5/mo but not $15 or $25 if we are providing real value to them?"

I run Cronitor.io, a monitoring service for scheduled jobs. In our case, we have about as many users on our mid-priced plan as we do on our entry level plan. The message our subscribers send us is: we're not shopping on price, your fees are reasonable, just keep building your product.