Exactly this ^^^^!!

John

Been selling used pinball parts at shows for 20 years now and I appreciate your enthusiasm and what your doing....
The reality of it is that you have nothing special on those pictures other then the chime units and those are not as easy to sell as they once were either. It will take a hundred people to pick it up at your booth (which is a huge expense btw., plus the gas, food, lodging.....etc.) before someone wants it for half of what you put on it. Those posts, switches, aprons, used locks .....are just not worth the table space they will take up and hauling them around from show to show. They might as well go on the free table and then people might take them. Used coils are like a $1 each and there still hard to sell unless you find that one guy at the show that needs it at that moment because the reset coil in his 1963 Gottlieb just burned up. Plastics, are $1 each because again you have to find that ONE guy that needs them. Nice coin mechs are a struggle to get $3 out of. Pop bumper caps unless there rare, nice and unbroken have a $1 value to them. Those pop bumper assemblies, metal pieces, etc.....might as well go on the free table too. Trust me. In the end a lot of that stuff just needs to be given away and guys will walk away with a smile on your face and perhaps come back later and buy something significant. I'm not trying to rain on your parade really but rather give you some insight on how I've seen the market at the shows work. Now a days guys are mostly interested in flashy LED's and this is why I don't do shows like Chicago Expo anymore, too much overhead and not enough sales on the used parts market.
Gook luck however, I wish you the best.
John