Price Matrix / Discount based on quantity - Fixed price per product

[Samo21]

Hi guys,

in my shop, I would like to change the price per product depending on the quantity the customer wants to buy. The quantity relates to other products/collections as well. In this case the collections I am referring to have few products with the same price.

EXAMPLE:  someone buys 2 products of the collection A, 2 products of collection B and 2 product of collection C. This means that the new price (18; 9; 4,50) applies.

Question: Is there any app available which could solve this problem or do you have any concrete ideas to find out a workaround?

This is actually the same price matrix I have in my retail store which I would like to apply also online. Therefore, I don't want to work with "% discount".

Thank you!