All the Peterson's guides are now free via Kobo, available to Canadians.
Green Careers in Energy
Ultimate Word Success
Master the Real Estate License Exams
Some of these may end up being excerpt samples, as the somewhat-more-descriptive-than-from-Amazon's-listings titles for the following show:
Master The Sat: The Writing Process And The Sat Essay: Chapter 6 Of 20
Master The Sat: Geometry Review: Chapter 12 Of 20
Master The Sat: Mulitple-Choice Math Strategies: Chapter 8 Of 20
Master The Sat: Diagnosing Strengths And Weaknesses--Practice Test1: Chapter 2 Of 20
However, they seem to offer enough chunks of the original book (presumably "Master the SAT") that they may be worth picking up.
Master The Asvab--Diagnosing Strengths And Weaknesses (Practice Test 1)
Incidentally, if you're in Canada and haven't checked the Kobo Free Books listing on their website lately, do. They've added a bunch more books that have shown up free in other stores previously, and also a number of short stories are now available to Canadians that are still US-only in all the other stores, mainly the HarperCollins promo stuff.
Good if you like Christian fiction and YA paranormal romance.