> Summed up, I'm currently saving just over 11% on all the groceries + ~7% on fuel cost by sharing that information with 5 companies. I don't think this is the

> Summed up, I'm currently saving just over 11% on all the groceries + ~7% on fuel cost by sharing that information with 5 companies. I don't think this is the exchange you are making, though. The money you save here is no different from couponing: it's a way for retailers to price differentiate and charge the other customers more. You are being charged a fairer price (still profitable for the retailer), for actively paying attention to what's cheaper; that'll be unrelated to the price or value of your data.