I've organized my books into categories, so you can either buy an entire box of books on one topic, or buy individual books.
Here's the first category. Others to follow.
Psychotherapy, Counseling & Clinical Psychology (all for $25)
Modern Clinical Psychology, Sheldon J. Karchin $5
Clinical Psychology, Expanding Horizons, Sundberg, Tyler, Taplin $5
Counseling and Psychotherapy, Bareason and Cardoff $3
The Work of the Counselor, Tyler $4
Behavior Change in Counseling, Osipow& Walsh $3
Systems of Psychotherapy, Prochaska $5
A New Guide to Rational Living, Ellis & Harper $2
Problem-Solving Therapy, Haley $2
Uncommon Therapy, Haley $1
Reality Therapy, Glasser $3
The Fifty-Minute Hour, Lindner $1
Effective Therapies for PTSD, Foa, Keane & Friedman $5
Asserting Yourself, Bower & Bower $3
When To Say Goodbye To Your Therapist, Johnson $2
Consumer’s Handbook of Mental Health, Mishara & Patterson $1
How To Choose and Use the Right Therapist For You, Erwin & Erwin $1