Well, it's not the most expensive for the moment (since it's on sale right now).Indeed. Let’s all pay for the most expensive, closed-source and questionably advertised content blocker that is made by the lead developer of the open source adblocker uBlock. Let’s not ask any questions why Purify is not open source or free too. If people have a problem with Crystal’s announcement, then they should seriously ask themselves whether they should be supporting any adblocker that is not free and open source.