Being unemployed for 3 weeks short of a year, I'm looking about for things to sell to pay bills. I have an extra copy of "North Shore: America's Fastest Interurban" by William D Middleton. I'd like to sell it but I also don't want to get taken. I've seen a shrunk-wrapped copy at a hobby shop for $75, but I also saw another place selling an open copy for $15. Is there any way or place to find out how much this edition is worth?