I've had experience with cars, tractors, models, and other stuff that I'm sure that I forgot, but it is the same in all, you just have to shop around. Years ago two guys were bidding on a wide front end for a Farmall M at an auction. Both were determined to get it and it sold for an outrageous price. After that, word got out, and wide front ends went through the roof in price (and still are by the way). The seller has a right to set his price, so don't have hard feelings towards him, simply buy somewhere else. When I look at Ebay I wonder if some of those folks are even trying to sell their stuff, I also seen the boxes that make their annual trip to the swap meet never to sell, but for others, there may be overhead costs, or circumstances that we are unaware of that affect their price. So simply do a little homework (if you can) before your purchase, and still from time to time (like myself) your wants and excitement may cause you to pay a little more than you should have.