Train Show at Monroeville Expomart in Pittsburgh, PA.

Anyone going to this show?? It is today and sunday. I am going to the show in about 20 minutes to see some trains. Not sure if i will buy anything, maybe just some parts. I need some 022 lanterns, because one of mine melted and another one has a broken tab. So gotta replace them. Maybe i will get some spare motor parts or something. Looking at prices for F3’s though. To prepare for York in April. I have a question, if you saw a 2356 southern F3 AA units and the man has 1400 listed on them and the book 2008 edition says they should be like 800 can you show that man the book and say I want it for 800?? What will the man say or do?? I thought sellers have to follow book price to stay consistant with everything elsewhere. Just a thought. Thanks.