Actually, we do need the dealer add-ons to compare how much we're being taken advantage of. So basically to compare your apples, we need MSRP, which would include factory/port installed accessories, and would be on the Monroney sticker, then the aftermarket dealer installed accessories and dealer-addos (tint, vin etching, edge guards, etc) but not TT&L.
That's what allows us to compare how much the dealer is demanding for these cars
Summary:
MSRP - from actual Monroney sticker
Accessories added AT THE DEALER - Mazda wheel locks, floor mats
Misc. trumped up charges such as tint, door cups and pedge guards, VIN etching, etc.