11. The Canterbury Tales by Geoffrey Chaucer – $7.5 million
An iconic collection of 24 stories written in medieval English in the late 1300s, the Canterbury Tales were penned by British writer Geoffery Chaucer. Its first edition only had a total of 12 books and was printed in 1477.
Considering the rarity of this edition, it was picked up in 1998 by the famed British philanthropist billionaire, John Paul Getty Jr. The price tag? A cool $7.5 million, that too in 1998!