The new German Grammar--a smaller edition of Master the Basics--doesn't include the "Test Yourself" and "Diagnostic Analysis" sections of Master the Basics. Both books review German vocabulary, grammar, punctuation, idioms, and sentence structure.
The book, German Grammar [Bulk, Wholesale, Quantity] ISBN# 9780812042962 in Paperback by Graves, Paul G. may be ordered in bulk quantities. Minimum starts at 25 copies. Availability based on publisher status and quantity being ordered.