Brand New, English Grammar in Use, Fifth Edition

Raymond Murphy's English Grammar in Use, Fifth Edition, is a self-study reference and practice book for intermediate learners of English. It includes the answer key for independent study. This book covers grammar points with clear explanations on left-hand pages and practice exercises on right-hand pages. Brand new, I’ve barely opened them. Guarantee nothing written down in any of the pages, and very clean, brand new condition. It’s a very thick textbook. Bought it a month ago at a bookstore, but I don’t use it, so selling. Retail goes for $40-$60 CAD, asking for $28