Definitely worth the money.
My wife and I tried this after hearing some friends talk about it.
We got there around 6:30pm on a Wednesday night. It wasn't very busy, but we still waited in line for about 20-30 minutes to get on.
The experience was pretty awesome though.
I ended up going down backwards the whole way. It was fun watching other people watch from the ground in awe.
Not sure if anyone else mentioned it, but the weight limit is 60-250lbs.