Napoleon Lajoie Card for only $13.50?

[Maris61]

So I immediately knew that a logical reason of supply & demand was dictating the low prices on this old Napoleon Lajoie card. It's from the 1913 Napoleon Lajoie Card Game by Parker Bros.--and w/ 50 cards (in red or blue) included in each game, it was not surprising that I could find one of these recently for only $13.50, ungraded. I'm interested in learning a little bit more in the way of minutia about this game and these cards. (I'll include some of the more informative links & resources I've found thus far, including a couple of threads from Net54baseball.) One thing I'm curious about is why Parker Bros. stopped using Lajoie's likeness on the cards when subsequent/similar editions of this game were released in years not long after 1913? An issue of copyright/permissions? Also, while I suspect the population count is pretty high on these, I really don't even have a ballpark idea as to print runs. How would I find that info?

Whatever the numbers, I still wonder how much more these would be valued at if instead of Lajoie it was, say, Ruth or Cobb's visage gracing these. . . . Still, I think I prefer that it's old Nap. (There's enough Ruth stuff out there anyway.)

http://www.psacard.com/CardFacts/Hierarchy.aspx?c=3228
http://www.oldcardboard.com/wg/lajoi...?cardsetID=959
http://www.net54baseball.com/showthread.php?t=114523
http://www.net54baseball.com/showthread.php?t=64830