I think you need to kill/archive 80% of your ideas just so you can focus on the ideas that interest you and for which you know there are potential customers. The more choices/opportunities you have the harder it becomes to make a decision.
I don't make SaaS but I subscribe to some and they cost a lot more than $5, so I'd aim higher in terms of that. When I see something priced at $5 a month it feels like a nuisance and like the software is made with low effort. Ability to execute one function flawlessly rather than having many mediocre features, is always better. This is a drawback if you offer many 'widgets' but none are essential.
I don't make SaaS but I subscribe to some and they cost a lot more than $5, so I'd aim higher in terms of that. When I see something priced at $5 a month it feels like a nuisance and like the software is made with low effort. Ability to execute one function flawlessly rather than having many mediocre features, is always better. This is a drawback if you offer many 'widgets' but none are essential.