"A" ~ condition is 25% off retail price. New or near new.

"B" ~ condition is 50% off retail price. Cover may be worn or written on. Spine may be ripped or taped.

"C" ~ condition 1-10 pages may be missing or written on. Cover may be worn or gone or very ripped. Useable.

"NC" ~ means that it is not current with the most recent edition and is not compatable.

"*" ~ when an astrick is found at the end of a title it means this book is compatable with the newest edition.