Hi,
not only talking about rolling stock, what about modern switch handles? Or other stuff beside the tracks?
The prices for modern cars ( high cube box cars) are extremly high for second hand material, modern Atlas tank cars are fairly priced, compared with detailed H0 cars, there around 40$.
Perhaps, if Atlas really has one modern car in the pipe, let`s hope, it`s auseful one, both for branch and main.
kindest regards
Elmar