This is not an easy question to answer because it's all relative and the person setting the price feels differently about the service than the person buying it. Their perceived value is different than that of the customer's.

On top of that, every customer will have a different perceived value, so setting one price for every customer won't work. You'll either be too high or too low for almost everyone.

If each customer will have different specific needs and a different maximum price they're willing to pay, how do we get the best price for our services?

By conveying the value to our customer. The difference between the pain they feel now and how much better they're going to feel after our work together.

All of this is to say, buying is an emotional decision and we need to account for the psychological factors at play. Big business spends millions every year to understand the best way to exploit those factors because we, as consumers, are mostly unaware of the way our brains process price.

I'm not saying you should be trying to trick your customers, I'm saying to convey the value per dollar you provide, you need to understand how our brains comprehend price.