I bought the Chicago book this year for the first time in maybe a decade. I bought it because of the dozen $5 off $50 coupons for the local grocery store, those went to my parents and made the book worth purchasing. The restaurant listings are brutally bad, but there are some decent fast food and movie coupons.

United has some tiered $25/50/75 off coupons, but I suspect that these are offset by having to pay $5/$10 to get the ticket issued, and also not useful on a web-only rate.