[tallgiraffe]

Charge by the ability to pay, based on your value proposition.

For example, if your service or product can help the customer save $10k/month for the next three years, that's 360k that you will be saving them. It doesn't make sense to charge them $200 for it, but maybe 30% of the net savings can do it, so $100k!

On the other hand, if for 100k they can hire a FT developer to do what you do, plus 10 other features, then charge less so they pick you over the other option.

From the personal experience, I would say avoid building products where you sell something for very little, unless you can get lock-in and your customer's lifetime value is pretty large. So if you offer a $10/m service, and your customer leaves in 3 months, that's a lot of work. But, if they stay for next 10 years, and you can find 10 million customers like them, then it's worth it (hey Dropbox!).