This is not a numismatic post; it is about the pricing of uncommon books.
The blog “it is NOT junk&rdquo noticed a book on fruit fly DNA selling for $1,730,045.91. Instead of assuming a typo the blogger followed the book and watched as the price rose to an astonishing $23,698,655.93 then crashed to $106.23.
It's suspected that no human entered these prices. Instead, two competing stores probably used computer algorithms to price the books.
(via Marginal Revolution)
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