quantum discount combined with normal discount flawed?

[bluekachina]

Hi,

 

I'm using Prestashop 1.6.1.6 and I have come across something that is really strange. I believe the calculation of prices in Prestashop is flawed.

 

1 product: 20% discount (product discount)
2 products: 10% quantum discount
3 products: 20% quantum discount

 

In every other webshop software the total discount for buying 3 products would be 40%.

 

In Prestashop (a fresh installation) the calculation is 20% discount.

Why?

 

This is an ongoing problem, because we cannot give discounts in combination with quantum discounts.

Some help would be appreciated.

 

 

Edited August 20, 2016 by bluekachina (see edit history)

[vekia]

there is nothing to fix because it is not a bug. This is how prestashop calculates prices of product.

if you will create: product discount + quantity discount both are included to "specific prices" section on product edit page: 

PrestaShop can apply only one specific price to product, so the target of specific price will be always original product price.