Ho OhOh,
All our room rates include breakfast.
Our Asian breakfast comprises cut fresh fruit, pork fried rice, pork & vegetable broth and decent tea or coffee. We outsource the rice and broth. Our cost for the whole thing is 130 baht.
Our English style breakfast comprises cut fresh fruit, yogurt, thick toast with real salted butter, jams/honey/peanut butter, pork sausage, potato cake, baked beans, mushrooms sauteed in garlic butter, grilled tomato, herb scented scrambled eggs and decent tea/coffee. Our cost for the whole thing is 170 baht.
I'd estimate the materials cost of a bacon, egg and cheese roll like this at 70 baht.