Quoted from lmsybiatb:

I used to collect autographs and sports memorabilia back when I hated money. Regardless of what you think of Gene Simmons as an individual, a pinball machine is a fairly horrible place for his autograph. There's a reason most autographs are found on items of very little value. The autograph may not be real. Even if it is real you have to convince the next buyer of its authenticity. Rookie cards are horrible places for autographs for this reason. Also the potential buyer is not in the market for an autograph they're buying a pinball machine. You likely won't get a dime out of your $120 investment.
P.S. If you want his autograph, have him sign a 16 x 20 and get it matted and framed. This you could sell if you get authenticated through psa.