Cheap Anatomy Textbook that's comparable to mainstream A&P textbooks - What do you recommend

Try the Anatomy & Physiology coursebook by Dr James Ross. I found it cheap overall as it includes content from many different anatomy textbooks in a single volume.

have you thought of buying a used book? or an earlier edition? try bookfinder.com

or if you go through amazon.com you may be able to click on the word "anatomy" to get a selection of anatomy books and then read the opinions of other persons about each book.