Try Amazon or Abebooks.com. Sometimes the same book thru Amazon can be found cheaper, and same or better grading, thru Abebooks. This site has access to thousands of dealers and at least 140 Million volumes. I Use both all the time. With Abe, in 10 years, was Never been disappointed in what was delivered. Most were at least 1 grade above what was posted.
If no one has the book today, try again next wk. Took me a year to find a decent price on a 3 vol. set of Gideon Welle's Diary, but then again, this set can be very hard to find in good condition.
Chuck T. in IL
Have a nice Life!