What is the most expensive book series in the world?

Just updated: 50+ Ways to Make Money (including 30+ work from home jobs)

More ways to make money:
FlexJobs – Find remote and flexible jobs in over 50 career fields from all over the world.

Swagbucks – Earn free gifts and cash-back rebates by searching the web, playing games, watching videos, shopping, and more.

Writers Work – Find freelance writing jobs and publish your articles, all while working from home.

Public.com – Get free stock just for signing up for this investment app.

Question: What is the most expensive book series in the world?

Answer: The most expensive book series in the world is the Oxford English Dictionary, which costs around $1,200 for a full set.

What is the highest advance ever paid for a book?

How much does it cost to develop a new drug?