You can often find used copies in "Very Good" condition on eBay for around $39.95 or AbeBooks for roughly $42.65. The Pop Piano Book
Rather than just providing songs to play, Harrison focuses on the used by professional musicians. The book is structured to build a foundation in all 12 keys, which can then be applied to specific musical genres.
A Guide to Mastering Contemporary Style with The Pop Piano Book
Deep dives into professional chord voicings and transitions used in pop, R&B, and soul.
The book is available in both physical softcover and downloadable PDF formats from several retailers.
