Add additional price on each item

[ToroLoco]

Hi,

I have a case where I need to add extra cost on the products of an shop, but I don't want to have a combination.

So what I need to have is a metered price that will escalate 0,50€ on each step and will have 5 steps. 

For example I have an aroma that costs 5€ and the client could add 1ml extra scent with quantity 1ml - 5ml and each extra ml quantity will cost 0,50€, so the total aroma cost with extra 2ml scent will be 6,00€.

How I can achieve this?

[knacky]

It can't be that simple.
Why don't you use a combination?

1. Use a combination

or

2. create a new hidden product with a price of € 0.5 per 1ml and create your own module with a choice of options + javascript which adds the price.

https://stackoverflow.com/questions/55227145/how-to-programmatically-add-extra-fee-in-prestashop

[Ress]

If you don't want to use combinations, maybe a module like this?

https://addons.prestashop.com/en/sizes-units/19389-dynamic-product-price.html