Over the years(about 50) I have acquired many cheap freight cars that were given to me, bought by me at yard sales, buy outs of Hobby shops, train show purchases & catalog buys. I have in the past 6 months sold about 200 old run down freight cars that someone sold on EBay. I sold them for $2.00 ea. w/old hornhook couplers. Most of the good ones that I kept are Athearn, Con-Cor, Atlas, Mantua, Walthers, Bowser, Bachmann, Kadee, Kato, Very little Model Power, Trix, Trainman, Stewart, & Roundhouse. I also have some old Varney that I have reworked & some old IHC.
My passenger cars are; Athearn, Walthers, Stewart & Con-Cor. Last year I sold about 25 old Athearn passenger cars w/the Penn & NYC line.
It's amazing how many pieces of rolling stock that you can accumalate over the years. At one time I had 375 freight cars & 60 passenger cars. I don't have enough space on the layout for all of these pieces of rolling stock, but, I keep on collecting more. It's the same thing w/engines. Don't need anymore, but, got to have that new one that comes out. I'm sure there are other people that think the same way I do. The more the Better.