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(CNN) -- Lots of natural people would disburse $23 for a book.

But $23.7 million (plus $3.99 shipping) for a scientific book about flies!?

This unthinkable sticker price for "The Making of a Fly" on Amazon.com was specked on April 18 by Michael Eisen, an evolutionary biologist and blogger.

The market-blind book listing was no the result of uncontrollable demand for Peter Lawrence's "classic go in developmental biology," Eisen writes.

Instead,oakley, it appears it was sparked by a robot price war.

"What's fascinating about all this is both the seemingly endless possibilities for both chaos and mischief," writes Eisen, who works at the University of California at Berkeley and blogs at a site called "it is NOT junk." "It seems impossible that we stumbled onto the merely sample of this kind of upward pricing spiral."

Eisen watched the automaton price war from April 8 to 18 and thought that two booksellers were automatically adjusting their prices opposition each other.

One equation kept setting the price of the first book at one.27059 times the price of the second book, along to Eisen's inquiry, which namely posted in detail on his blog.

The other equation automatically set its price at 0.9983 times the price of the additional book. So the prices of the 2 books escalated in tandem into the millions, with the second book always selling because slightly less than the first. (Not that that materials many while you're selling a book about flies for millions of dollars).

The episode highlights a little-known fact about e-commerce sites such as Amazon: Often, people don't build and update prices; computer algorithms do.

Individual booksellers on Amazon and other sites pay third-party companies for algorithm services that automatically update prices. Some of these calculator programs purportedly work very well, getting sellers up to 60% more sales because they underbid the championship automatically and repeatedly.

The avails are clear: If you're managing dozens of bargain items aboard Amazon alternatively eBay, it's tough if only impossible to keep up with all of them.

"If you have more than 100 items, then it's impossible for you to manually converge on the price," said Victor Rosenman, CEO of a enterprise phoned Feedvisor, which sells algorithm services to people who use Amazon.

"It's pretty many favor the stock commute. What you see there is the prices changing all the time -- yet they not alteration drastically. Sometimes it's a dollar here a dollar there -- maybe $10. For a book, it probably would be pennies."

These algorithms vary warmhearted in quality, whatever, as the Amazon case shows.

Sellers lightly can shirk the million-dollar-book position if they set price domes and floors on their pricing algorithms, so that the competitive commanding shuts off at a certain dollar jot, Rosenman said.

"It's like you put on the gas and didn't have the handbrake," he said. "This is a very elementary fault. So I am very, very surprised this entity happened at all."

Some of these algorithm services give clients control over their equations, letting them amend them as they go. That doesn't always work out well, Rosenman said.

His company handles all of this for clients, but charges a hefty fare, catching 1% to 5% of the seller's profits and charging monthly fees of $500 to a few thousand dollars a month, depending on the size of the contract, he said.

Robot-adjusted prices may change a few times an hour or a few times a day, he said,gucci sunglasses, relying on how competitive a price combat becomes.

These algorithms try to discover if they're working against other computers or peoples and then they adjust tactics therefore, he said.

They too take other ingredients into attention, including how well the peddler is rated by Amazon consumers. A dealer with a magnificent trace log may be skillful to sell books for a slightly higher price because of his or her reputation.

Eisen, who first blogged almost the overpriced book, writes that "alas, somebody ultimately noticed" the brutal price of "The Making of a Fly." On April 19, he says, the price of the book plummeted from extra than $23 million to $106.23.

On Monday p.m.,oakley eyeglasses, the current book was listed at $976.98, and Eisen thinks the price is escalating anew.

Neither Amazon neither both of the individual book sellers reacted to requests for annotate from CNN.

If naught else, Eisen writes, the situation earned the fly-book's lyricist some bragging rights: "Peter Lawrence can now comfortably boast that 1 of the biggest and most esteemed companies on Earth valued his great book at $23,698,fashion sunglasses,655.93 (plus $3.99 shipping)."
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