I line up with the "scarcity" crowd. There is a limited market for the poultry car, and obviously an even more limited number of imports available. It is probably no higher in quality than a good Pacific Limited car.
What happened is sort of like this: the Max Gray SP AC-4 went skyrocketing to $4 grand at roughly the turn of the century. Then Sunset imported the AC-4/5/6 for roughly $1200, fully painted and well detailed. The value of the Max items immediately dropped to roughly the same price.
Do not think for a minute that the poultry car cannot suffer the same fate. It probably will not, because most of us simply do not want poultry cars.
So, me too - what defines quality brass?