These guys told me that a MAPP sensor would cost me $150. The NAPA truck arrived to deliver the part as I waited. A quick call to the NAPA dealer revealed that their RETAIL/ Joe Customer list price on the part was $30. When I called the manager to complain about being charged this much, his response was "When you go to 7-11 to buy a gallon of milk, you pay more though, don't you?" My response? "Everyone in America knows the price of a gallon of milk- I bet the less that one percent know the price of a MAPP sensor for... read full review »