I agree that they're worth $1 on wheats. People try to get more for them because they are generally 'rare' and many are actually 'unique'. They were made from defective planchets, and as such, many people view the coins as sub-par. In general, I think 95% of laminations decrease the value of the coin, especially if it's on a key date or high grade coin. Blackdog on another forum made this analogy in regards to laminations "It's like pulling up in a Corvette with the fender tore up. People don't say "Wow, nice Corvette", they say "What happened to your fender? That's a shame".
That said, it does depend on the lamination. I like them if they fell off and were struck through the coin somewhere else. Like this 1908-S, where you can see the AM in America has some of the lamination flap struck through it.
http://indiancenterrors.shutterfly.com/pictures/50Here's an example of a beautiful off center
Indian cent in MS64. It would have easily sold for $300 without the lamination.
http://cgi.ebay.com/1902-INDIAN-HEA...Individual&h ash=item4aa2c4311a
But here is a lamination on an Indian. Aside from being huge and dramatic, you can see two partial dates.
http://indiancenterrors.shutterfly....pictures/121Those are just my
Two Cents.