If Karl Marx had lived long enough to see Car­ly Fiorina’s failed GOP cam­paign, he might’ve been impressed with the for­mer Hewlett-Packard CEO. After all, Marx only preached about the over­throw of cap­i­tal­ism — Fio­r­i­na had actu­al hands-on expe­ri­ence bring­ing a major cor­po­ra­tion to its knees.

At Goodreads, Marx’s treatise has a 4.17 out of 5 average rating, narrowly edging out the 3.63 average rating for Tough Choices.

Per­haps that’s why Fio­r­i­na per­son­al­ly signed a copy of Marx’s Cap­i­tal Vol­ume I in 2007 at a Man­hat­tan Barnes & Noble, a price­less piece of polit­i­cal mem­o­ra­bil­ia now up for sale on eBay.

Peter Hog­ness, a labor activist in New York and a for­mer high school class­mate of Fior­i­na’s in Palo Alto, is sell­ing the book. He says the sign­ing took place dur­ing a 2007 book tour for her mem­oir, Tough Choic­es. He pre­sent­ed Cap­i­tal to Fio­r­i­na dur­ing a book-sign­ing event and asked if she would sign it instead of her mem­oir. ​“Oh, I’ve read this!” she said upon see­ing Marx’s clas­sic work of polit­i­cal econ­o­my. She agreed to sign it.

Hog­ness says Cap­i­tal seemed like a more inter­est­ing choice than Fiorina’s mem­oir for his book­shelf. Sure enough, at Goodreads, Marx’s trea­tise has a 4.17 aver­age star rat­ing—nar­row­ly edg­ing out the 3.63 aver­age rat­ing for Tough Choic­es. (Hog­ness says he bought and read Tough Choic­es, and ​“it’s not a bad read.”)

He believes the book was appro­pri­ate giv­en Fiorina’s record.

“The book describes capitalism’s relent­less dri­ve to reduce labor costs regard­less of the human cost, and how over time this helps cre­ate a ​‘reserve army’ of the unem­ployed,” Hog­ness explained. ​“Before Fio­r­i­na became its CEO, Hewlett-Packard was known for its reluc­tance to lay off employ­ees. But she laid off tens of thou­sands with­out hes­i­ta­tion, and in that sense made HP a more thor­ough­ly cap­i­tal­ist enterprise.”

The book is described as being in ​“excel­lent con­di­tion,” and bid­ders have nine days to win the book for them­selves. At present, after two bids, the price is up to $102.50. The pro­ceeds from the sale will go towards Social­ists for Bernie Sanders, a grass­roots orga­ni­za­tion sep­a­rate from the Sanders cam­paign that is work­ing to get the Sen­a­tor elected.

The inflat­ed price per­fect­ly illus­trates Marx’s dis­tinc­tion between use-val­ue and exchange val­ue, Hog­ness explained.

“By sign­ing this copy of Cap­i­tal Vol­ume I, Car­ly Fio­r­i­na has increased its exchange-val­ue,” Hog­ness said. ​“And I can’t think of a bet­ter use for that exchange-val­ue than to help to elect Bernie Sanders as our next president.”

There’s no word yet on whether there’s a copy of Richard Dawkins’ The God Delu­sion signed by Ted Cruz float­ing around somewhere.

This post has been updat­ed to reflect Hog­ness’ claim that Fio­r­i­na said she had read Cap­i­tal.