Eric,
I collect rare scorebooks and have a few dozen of them. That said, pricing can be all over the place. There's not too many people that collect them for one reason or another, so they can go very cheap or for quite a bit depending on the content and if you have at least two very interested bidders. I'm fascinated by them because they often capture the only detailed play-by-play of some important games/teams.
Interestingly, similar to what you have, I have a few hundred bound scoresheets from Philadelphia radio announcer Claude Haring which cover games at Shibe Park from the 1940's to the early 1960's.
Rob M.
Stachel Paige's first Major League win on 7/15/48 as noted in Haring's scorebook. "Page" (sic) won in relief against the Philadelphia A's -
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In the front of one of his binders is that oh so famous announcement that was made before every game:
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