Do you know someone who has the local edition? You might be surprised by where you'd end up using it locally, and the rental car coupons are valid nationally. We've never had a hard time getting our money's worth out of the ETB on places we go anyway (zoo/museum/attractions, eating out when we're on the road, etc - it generally pays for itself in 2 family outings) so if you think you'll use the rental code the book is probably a good buy.