Salesmen
Good salesmen don't tell you how much you're going to spend, but how much you're going to save. Then they sell you their product, whether you can afford it or not.
That's one reason why I get nervous when the Blue-Dog Democrats tell me we're going to save $100 million on Obamacare. Sure, but what's it going to cost? And I'm not just asking about dollars, but also about sense.