I can't imagine who would buy that book for $795.00. I get their ad each year in the mail and put it directly into the circular file. Anyone operating a large chain should be telling them how to write the book. A small independent can't afford it. When I do get to have an oppurtunity to get my hands on publications like that, I always find out that there isn't very much in them that I don't already know. Certainly not $795.00 worth!
It might be good for a novice thinking about getting into the biz, but I think there are other ways of getting that information for free. Like here on this and other theatre related websites for example.
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