I agree with Stuart and Martin; the pricing for Perch is spot-on for the quality of the product and the level of support that’s offered. It’s low enough that clients won’t balk at having the price included in their invoice (or for the designer to absorb the cost) but high enough that it’s used by people who appreciate how much work has gone into the software and who make a commitment to working with the product.

I’ve been using it for a personal site (very nearly finished now) and I have to say it’s one of the best content management systems I’ve used – well worth the asking price.

Pricing a product is a tricky proposition, especially in a market where the competition is often free (WordPress, Drupal, etc.). Like you say, it’s necessary to weigh up the amount of time spent on development and support versus how much money the product is bringing in in terms of license fees. Quality is often worth paying for, and in the case of Perch that’s very true.