It's very difficult for hobby shops to get a decent supply of aftermarket parts. As we know, the aftermarket is rather fickle. Many can barely keep up with demand for their own retail and don't wholesale. Others will agree to supply a store, but fall short of delivering the order. Avenel Hobbies in New Jersey used to stock a lot of aftermarket but stopped because they couldn't get reliable supplies. I was in the store one Saturday when Randy was trying to phone an aftermarket company, only to have to leave a message with a kid. He also mentioned that even those companies that would ship resin, would only do so after their own demand for retail had subsided, so he was buying 'old news' pieces. So he pretty much gave up. Except for companies that do wholesale well like Model Car Garage, Pegasus, Jimmy Flintstone and the like.
Automotive resin/ Aftermarket parts are Not the only Items out there there is plenty of good quality military, non military products, out there. There is another hobby shop in the Valley, that is more in tune with All modelers, they carry a good amount of aftermarket items, there prices for kits is every bit as expensive as Hobbytown,. Yet they do a good volume of business through their store when I go there they have Model Car Garage, Pegasus, Detail Master, Parts by Parks, and a few others. They were known as primarily military but the new owners have seen fit to get into All types of hobbies, Trains,slot cars, Planes, Automobiles plastic/resin models of figures. Full service, if there is a problem getting Aftermarket parts, it does'nt look like it from my eyes.