This is such a broad generalization as to be useless. I use several pieces of software that are around $10/month which there’s no way in hell I would pay $50 for.
I'm not writing from the POV of a consumer of software. I'm writing from the POV of a seller of software.
If you are selling software, don't be the person charging $10/month. It's hard to make that business work.
Be the person charging $50/month. It's still hard - any business is - but it's much easier to make a software business financially viable if you charge decent money.
As an end user, there's no way I'd pay $50/month for any SaaS.
Lots of people feel the same.
Which leads me to another piece of advice: don’t do B2C. Sell to businesses who will be far more willing to pay higher prices, will churn at a lower rate, and will - in general - require less support.
Or, as Patrick McKenzie used to tell us over and over, “charge more”.
(Yes, yes, I know some situations, customers, product, thinking, etc are different. But with broad brushstrokes, my advice is to not even entertain such a low price.)