Ooops!
*Hellhound kicks Winterthorne for fawning over the toronto publisher and ignoring the d20 publisher that lives less than an hour away*
Sorry. I'm not fluent WRT all the publishers and products "out there".
Funny thing: I am commuting between Montreal and Ottawa infrequently of late (I'm looking for work in Ottawa), so I pass by Vankleek Hill regularly...
I know! Get yourselves some billboard space--gawd knows there's plenty of other advertisements "broadcasting" to us roadwarriors on the 417!

(Just pullin' yer leg.)
Back to topic:
I think the cost for a single item carries a psychological component. Most of us wouldn't think too much about quality of content if we spent $5 or less--do that once a month for a year. $60 total. A single item of $60 would make us pause--like considering the new pair of shoes each spring (once a year). The degree of cost will make most consumers cautious, I think--ever buy a new car!. (The higher the price, the sterner the consumer criticism.) Even then, consumer behaviour can skew wildly when word-of-mouth, testimonials, advertising and popular media get involved...
Price per page is not enough of a measure of a book's value. Product content and consumer budget, 2 quite independent parameters, play IMO vital roles in the success of the sales of a book like BotR.
I'll go out on a limb WRT BotR:
i) cost per page - good value;
ii) content - good value (really good IMHO);
iii) budgetary effect - poor (playing $60 in a lump sum is not trivial for those on tight budgets--which seems the case for many many gamers!).
(Ya know, I'm tired, so I'm not entirely certain my comments are as cohesive as I would like.

I hope ppl can follow what I'm trying to say?)
I am still pleased with The Book of the Righteous in spite of its price. BTW: once in awhile I am willing to spend a little extra to get what I want.
Cheers, it's Friday the 13th!
-W.