Be careful. A number of my classmates had issues with the international versions. The problems in the back of the book were sometimes (not always and not all of them) different. So we'd be assigned problems 4,5,7, 12, 15, 18 and 22. And they'd do them, but four of them would be the wrong problem.
If you pursue the international version, it may be worthwhile to go to the library for any problems assigned from the book.
Not all books have problems - my major was Accounting - lots of end of chapter problems to work.