I'm sorry, I don't support exchanging books within a bundle.
The collections of books in the offered bundles are fixed.
My e-commerce system is not sophisticated and it does not support ad-hoc bundles. I'm sure you can understand. You can see the full catalog of books and bundles here:
Machine Learning Mastery Books
If you have already purchased a bundle and would like to exchange one of the books in the bundle, then I'm very sorry, I don't support book exchanges or partial refunds.
If you are unhappy, please contact me directly and I can organize a refund.