What is the most expensive book ever sold
- What is the most expensive book ever sold at auction
- What is the most expensive comic book ever sold
- What is the most expensive book sold at auction
- What is the most expensive comic book sold
- What was the most expensive book ever sold and who bought it
- What is the most expensive page of a comic book ever sold at auction
- What is the most expensive thing in the world
- Most expensive element in the world