This post is aimed at plugin developers but also to regular users. As a plugin developer, one of the important pricing decisions you will make, is what level of discount you will offer for license renewals.
It is harder to get new customers than to retain those you already have, so you should be offering a discount on your plugins. With GPL WordPress plugins what customers are really paying for are the updates and support. Normally support decreases as time goes by, so it makes sense in this scenario to reward your customers with a discount for license renewals.
Here are the discounts offered by a few popular plugins:
Are you a plugin developer? Let us know what discounts you offer for license renewals. And WP users, what level of discount do you think is fair?