We just had this topic a few weeks ago. Yes, please use the search feature.
If memory serves, I think the topic was closed. There's no way everyone can agree what counts and what doesn't. Some say Spiderman is the most expensive, but others say it doesn't count because it's a simulator. One of those neverending debates, I guess.
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Matt Lynch
Co-Webmaster, Kennywood Boulevard
http://kennywood.coasterbuzz.com