Also, what is the usual quota that needs to be met for a locomotive to be produced?
The answer is, "it varies". To sell the E60 at the price point Scott had it at, it would have taken about 350 units. As unit count goes down price obviously goes up. At 60 units the E60 almost could have been run in brass, but I'd hate to try and even guess the price point with the current market in general. Brass runs usually are successful between 75 and 100 units. Ideally a plastic run diesel would want to be in the 500 unit range.