I was looking through the Rare Books section of the AbeBooks website a few days ago and searched for some books with the keyword math. The first entry is shown above, a book by Copernicus published in 1542. (It seems that the books with the highest prices are listed first.) A quick internet search reveals that the $350,000 price for this book is reasonable. (But I doubt that anyone interested in buying the book would have it shipped for $6.50.)
The second book on the list is shown above, a book published in 1990. There are three copies of this book for sale. Which one would you choose, the one priced at $149.90 or the one priced at $118,935.97?