Not a swap meet,but there is the World Of Wheels, Jan. 27-29 at the convention center. Pretty much the same thing, you can look at things you would not pay that price for.
One in Johnstown Feb 5th Details on Big Al's List Hey,Custom 53---Do you know that world of wheels is having up stairs for fancy big dollar stuff and downstairs for Traditional rods,Leadsleads & Rats Just go downstairs and stay there!
Depending on where you are in western PA (Erie?) there's one coming up in Hamburg, NY on Feb. 5th. There's always something interesting to pick up there. Here's a link: http://www.the-fairgrounds.com/the-fairgrounds/events-calendar/2-5-12%20Snow%20Buster%2010th%20Annual%20Indoor%20Automotive%20Swap%20Meet