Well, in all fairness, once you've made the deal you are pretty much going to have to go through with it. Look, it's not hate speech or something really distasteful. And by no stretch of the imagination could anyone honestly say you need that product.
If he comes up with the money, and the ad copy isn't offensive, just do it. Don't try to cheat the guy - word could get around...
Who knows? We may be laughing about this several years from now...when lousy ratings knocked him off the air, the product has been consigned to oblivion, and you are still as amazingly beautiful as you are now.