For some reason when I saw this on the map I thought it was a pedestrian tunnel where I could walk under the river from the Bund to Pudong. I thought that would be cool so I made my way there only to find out that it was an attraction. I failed to do enough research on this and it cost me.
As of February, 2013 the cost was 50 RMB, about $8 US for a ride through a tunnel that has a very rudimentary light show. This is not Disney or Universal, it is many rungs lower. So if you are looking for some "sights to see" don't look here. It is just an overpriced, very slow subway ride.
As an engineer and some interested in trains, the cars were nice (crowded) and the turntable system to change the car direction was very cool; but not 50 RMB cool. They do have some combo tickets that you can get, but those didn't interest me.
I did it, but never again.