Looking for a used book

[SteveDallas]

My mom has developed a hankering for a particular book she remembers reading to her classes when she was a teacher. The only problem is, it is out of print and, apparently, on the rare side. My dad has undertaken to purchase a copy for her for Christmas, but while he is a man of many fine qualities, books are not exactly his thing (unless they happen to be instructional books about wood carving or power tools), so he delegated the task of finding a copy he could buy to me.

The cheapest copies I've found so far are just under $200, at Amazon. ABE Books, which is where I usually go for used stuff, shows several copies of the older hardback edition, for around $300.

Does anybody have any other suggestions for where to look before we pick one? 90% of the web hits are Amazon affiliates so they show the same hits. Nothing new on alibris either.