This is maybe a odd, but I am a bit bored and trying to work out if it is cheaper for me to buy scones (and then possibly muffins) from Tesco/Morrisons or to bake them. I suspect it is cheaper to buy them.
In calculating this I need to know how much, roughly, it would cost to have my electric fan oven on assuming I have it on for 5 minutes heating up, then 12 minutes baking, at 220 for scones (180 for muffins).
Does anyone, for example a physicist (they always know these sort of things) have any idea of this?
Thank you!