N Scale Decals I Have A Bunch Of N Scale Trains And Tracks, Modulators, And A Few Larger Trains How Can I Get ThecurrentValue?

I have a bunch of n scale trains and tracks, modulators, and a few larger trains how can i get thecurrentValue? - n scale decals

I opened tons of cars N scale never, caboose, track, equipment, transf ... they run, etc. How do I get the current value, there is a book can be purchased or subscription page can I buy? There is also a wide or a little of everything? Can you help me?