This is an interesting pricing spreadsheet for SaaS:

https://docs.google.com/spreadsheets/d/1LZXJQQ2Xq_NsKmj6ppui-ee92FObCee7NMy8xQfyoaA/edit?usp=sharing

It's pretty tough getting to $1,000,000 in revenue if you're charging less than $50 per month.