It is not just this extension. It seems all releases where there are upgrades the upgrade price is the same as the discounted price which last for seven days. During this time no discount is effectively given for upgrades.
Hello Mim, The normal price of app connect validator is €109, which given the options, quality and seamless app connect integration it offers including of course the time and hard work of our developers is a pretty fair price. The upgrade prices are 20%off the actual price. If you are not happy with the extensions pricing policy you can check the subscriptions we offer.