Thanks in advance
WebAssist has stated that you can do either - buy the extensions outright and pay upgrade fees for new extensions if you want to OR they are now offering a subscription model that as long as your a current subscriber, you have their latest offerings.
They are different... I am SuperSuite owner of several years but now have purchased the subscription because $200 per year - in my opinion - is nominal to have the latest offerings from WebAssist. It works for me because I know that a.) WebAssist is constantly evolving and adding new products; and b.) I know that I am the type of user who buys everything they come out with which in traditional licensing would probably cost me more that $200 per year. In other words the subscription now allows to me place a cap on what my extension expenses will be each year.
It's obvious they are not going the way of Interakt because they continue to grow and actually enhance their current line while offering several new products on a regular basis. WebAssist also has a tremendous support team that will actually work with you on problems that you have with their products.