Least moral option is buying the print version (Score 1)

Least moral option is buying the print version for the simple reason that it's a waste of earth's resources: Lots of the cost of the print version is about aspects of the book you don't actually need or want -- its paper, its actual printing, its distribution and packaging. Wasteful.

The ideal moral solution is if the company allowed you to buy an e-text version of the book for a reduced price (a price that excluded all the aspects you don't need or want)

Next in line is if you download the pirated version for free. That has the advantage of benefitting you AND not rewarding the evil company who's trying to cheat you of your money. Unfortunately it doesn't reward the original authors.

Least moral solution is if you encourage all the waste in resources and wealth by giving money for a wasteful print version that doesn't actually satisfy you. Bad for you, bad for the planet. Save your labor-earned money for something you actually want to have, not something that they're guilting you into having but you don't really want.