# Best formula for price depending on amount [closed]

What is the best formula of price of the product depending on amount. I mean "best" in psychological, marketing, stock rotation, profit maximizing, etc sense (any of them or all together, if possible).

Say, I often see that prices on Coca Cola bottles growing not as fast as volume of them.

I sure there is the best formula, invented by psychologists or derived empirically then proved in use.

## closed as too broad by BKay, Giskard, optimal control, Kitsune Cavalry♦, Herr K.Mar 8 '16 at 18:36

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• Feel free to edit the question, because English is not my primary langauage. – Orient Mar 4 '16 at 9:26

There is no "best" car design, there isn't a formula to design the fastest airplane with total weight $x$ and there is no easy formula that will give you the best price in general situations.