WebAssist has had the same upgrade policy since before your first purchase with us and the PowerStore3 upgrade path is no different than the extensions we have been updating over the years. Upgrade prices are listed at 50% of the retail price.
If we only charged $35 for the PowerStore 3 upgrade, there would be no upgrade because we could not afford to build it. I'm sorry you don't feel that the numerous product enhancements don't warrant the upgrade for you. We will continue to try to improve our products and add significant value in each new release.
Michael