Are 6464's that popular to drive this so quickly to sell-out status? I snoozed and I lost; I'm an Alaska RR collector, not a 6464 collector, so I thought I'd have more time. In the words of the great Homer Simpson, "D'oh!".
While 6464's are popular, this particular offering had lots of things going for it; in other words, it checked a lot of boxes, such as relating to 6464, appealing to Alaska collectors, desirable to those that collect Made in USA cars, etc.