Hmm alright so I am in a somewhat similar situation.
I am planning on taking the June Test and was preparing on my own using the PowerScore books. I've found them helpful so far but was considering taking a class.
I've already invested in the PowerScore books and all of the actual LSAT preptests. Is it worth taking a class at this point or should I stick with the method I've been working on so far?
Kinda depends on what you want. If you want a top score to get into a top university or to get a top scholarship, maybe the prep courses are worth it.
Personally, I have always done best when I can study material on my own. The cost of the powerscore books is microscopic compared to the cost of a prep class.
If all you're trying to do is "get in" and the school isn't that tough to get into, I'd say just stick with powerscore. (Obviously, a lot of factors here, so consider this very general guidance.)
However, if you really, really need a huge LSAT score, maybe the cost of a prep class will be worth it for you. Heck, the difference between a half ride and full ride for one year, alone, more than justifies the cost of a prep class.