I make it a hobby to mentally calculate the marginal return on the investment of additional cost to the marginal reduction in price on quantity purchases. There is almost always an optimal solution depending on how quickly you use the product.
Sounds complicated but it's what millionaires do when they go shopping. In itself, the mental exercise is truly enjoyable.
IIN that I bring a calculator when going to a shop?
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I make it a hobby to mentally calculate the marginal return on the investment of additional cost to the marginal reduction in price on quantity purchases. There is almost always an optimal solution depending on how quickly you use the product.
Sounds complicated but it's what millionaires do when they go shopping. In itself, the mental exercise is truly enjoyable.