I purchased the aforementioned 'Alexander Alekhine's Chess Games,1902-1946'
( Skinner and Verhoeven , McFarland and Company,Inc. 1998) new.
It cost me $85 U.S. in the year 2000. It is not only the most expensive of the
several hundred books in my Chess library,it is also by far the best value of all
of them. Over 2500 games* cross referenced by opponent,descriptive classification,ECO code,and in chronological order!
No other combination of books that I paid a similar sum for in total would come
anywhere close to the instructional value of this one book!
*Many are annotated by Alekhine himself.
But to answer your question, I spent ( I wasted) hundreds of US $ on material that was ( at that time) immaterial...