My recent class on “Best Buys at the Cheese Counter” reminded me—and my students—that a superb dinner-party cheese platter doesn’t have to set you back more than the lamb chops. You can spend $35 to $40 a pound on cheese today, or you can spend half that if you know where the values are. I assembled the seven selections for this class without shopping at a big-box store or chain. I was a little surprised by the class favorite but almost all the cheeses got some votes.