Found on Merchbar originally, discounted to $13.99. Credits go to jayceman! Out of stock atm, unfortunately.

https://www.merchbar.com/rock-alternative/christian-flake-lorenz/ch...

Available to order through target at $20.99, though.

https://www.target.com/p/christian-flake-lorenz-it-s-the-world-s-bi...

Available as bundle with vinyl also.

https://rarebirdlit.com/its-the-worlds-birthday-today-signed-by-chr...

https://rare-bird-books.myshopify.com/products/its-the-worlds-birth...

https://experiencevinyl.com/products/christian-flake-lorenzof-ramms...