Depends on what tour you take! They start as low as $10 and go up to $30 or $35 for the daytime tours. Their website has all the info!
http://mobile.trans-alleghenylunaticasylum.com/#HTours Here's the link to the tours offered and their website The 45 min 1st floor tour is $10, the 90 min 4 floor tour is $30, they have history and ghost tours, vip tours, photography tours... all varied prices. You should find what you need by following the link
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