At Amazon they have Twist I in used but very good condition for $9.51, and Twist II for $11.98, both fulfilled by Amazon with free shipping if the order reaches $25. However, this rider needs to scrape up five more dollars than the given limit to make this purchase of both books.
In speaking with my local librarian I learned that book borrowing in this area is far overshadowed by multimedia today. The person you are dealing with may be part of the generation that would tend to choose multimedia. So it may be an uphill battle pushing the book recommendation, but I personally would explain the advantages of the books that others mentioned, that they are more detailed than the videos and that they can be referred back to easily.
Signed, Highly Biased Book Lover