As an aside, I see that while amazon.com currently lists them quite highly priced right now, alibris.com can find some much cheaper versions. Second hand prices on amazon are sometimes surprisingly high, and sometimes, their new prices too - I routinely check bookdepository, wordery, booksplea.se, agreatread, thriftbooks, abebooks and alibris - each of them bests the others and Amazon frequently enough to keep checking them all. My list of sites to check is UK focused, but I expect there are US equivalents.

Looks like alibris will do a copy of the book in question for a bit under 20 USD as I type, with some searching around.