this is very old info, but back in the 80's, finding a solid lead--a person who was in the market to buy a car--was worth around $150 of marketing money Tim Ho

this is very old info, but back in the 80's, finding a solid lead--a person who was in the market to buy a car--was worth around $150 of marketing money Tim Horton's sells donuts, so I doubt comprehensive data about where you are wrt donut shops all year comes close to that value even 35 yrs later