The King of Rock n' Roll!

I was raised on Elvis. When I was in high school, between 11-14 years ago, my parents got me this collector doll. It has sat on my dresser ever since. The box has been put away. The ticket stubs are from when we went to Graceland when we took a trip across the south in 1994. The sign is a lithographed steel metal sign of Elvis that I received from ym grandparents sometime in the '90s. I am aware of the value of the doll...around $200, any ideas of the value of the others? Also, the sign has been stored in my closet with another black carboard sheet that came with it, ontop of it. At some point, they stuck together, and some of the cardboard is still stuck to the sign. It never got wet so I dont know how it happened. Any ideas of how to remove it? I tried a little lighter fluid, but I didnt want it to take the color or finish off so I stopped, it wasn't working very well anyway.