You can always find a group of 10 family and friends with similar tastes in books. Each write down a list of 10 books you'd like to buy, compile a list and remove the duplicates. Take the top 50 books and split up the list and each buy 5. Invest the time to learn how to remove the DRM and share them offline within the group.
You'd be doing what you were previously doing (buying a copying and passing it on).
The publishers aren't behaving ethically, why should you play by their rules?