Increasing prices in an online store, how is it done?

Question

Programming

Hi all. Please tell me how the price increase in online stores is done. Well, in general, there are goods for purchase:
a battery - 100 rubles.
charger - 1000 rub.
super-charger - 5000r.
I don't want to set my prices by hand. It is necessary, according to some algorithm, to increase the price so that there is a gain, for example, +50r on a battery, 200r on a charger, and 500r on a super-charger. What is the universal formula for calculating?

Answer 1

y=kx+b

Answer 2

oddly enough, I liked the short answer xmoonlight
y=kx+b
, I understood how:
the price of the product will be equal to the purchase price * for the profit in percent + the mandatory markup
the mandatory markup will work in the case of cheap goods, the percentage markup will work in the case of expensive goods.

Answer 3

+ 100% for 1 category of goods + 140% for the second category of goods.
If the product was bought 10 times in two days, then another + 5% and so on.

Answer 4

battery - 100 rub.
price = 100r * 50% + 50r
price = 1000r * 50% + 50r
price = 5000r * 50% + 50r

Answer 5

In the forehead - we classify goods by price categories, turnover, and then we place a multiplicative and additive margin for the categories.
A sort of ABC classification.