We received the exact same letter from Yelp. Our usage is significantly higher and when we talked to them, the prices they quoted were ridiculously high (thousands of dollars a month).
I assumed that Yelp had been doing this all along and we ran above some predetermined limit, but the email we received was identical to yours. So I'm thinking that Yelp is trying its best to monetize all API users
Does yelp (or others) allow the restaurant to modify the menu/offer coupons in a dynamic way? (i.e. change multiple times per hour, update with in minutes)
thanks