If you have trouble getting anyone to understand your stash, and you rob parts from one kit to use on another model, you can tell them this. I bought half of those kits over there for the detail parts in the box,,,,,,resin sets cost $20, I paid $5 at a show for each of those kits,,,,,look at how much money I saved.
I really do that, I bought an F-89 to get the two Genies for the Phantom test aircraft, bought an F-15 for the ASAT missile on a different company's F-15 model, buy A-1 models for the HPAR rockets for Panthers and Banshees, different A-1 models to get the SUU-11 gun pods. Each Hasegawa Phantom builds a nice complicated, relaxing build, and in the bargain supplies a "detail set" for some of the cheaper Phantoms on the market. In each case, the parts either aren't made by the aftermarket,,,,,,,or the plastic upgrades are cheaper than resin parts for the other models.
Of course, between always taking off the shrinkwrap from every model,,,,,and having 2-10 parts swapped out of some of them,,,,,my collection isn't worth what other people's might be worth,,,,,,,,,,but Anne and I didn't buy the models as an investment, we bought them for me to build, or to get the parts or decals out of.
Rex