Yeah, this is going to sound mad, but I quite like only charging $50. I know some customers would be willing to pay more, but under the hood the product is the same and I personally feel good about giving people great value.
The above would have to change if I started doing serious sales, in which case I’d need a higher number to justify the time involved.
Value is relative. That is how you justify charging open source $0, a bootstrapped business $15, and a multi-billion dollar corporation $5000. The larger the product/more revenue a product brings in the more value your service offers them.