Why pay? The thumbnail tabs alone are worth $30 to me. The work spaces are AMAZING for projects and whatnot. In fact, there are so many features of this browser that you can't find or you can't find as well done anywhere else that I can't list all of them. Type "google cats" in the search bar to google search without using the muse to click to the search tab. Try to add VersionTracker or Google Images to any other browser's search field. Find another browser that lists all links on a page (only iCab and OW do this).

Oh, and it's $20 for students.