Product custom sizes affecting price...

[Basobaso]

Hi all,

 

In my eshop i have specific products (in one Sub Category), let's say wood frame, which will have some Attributes, such as width & height... color brown/black. 

 

The problem is, there will be available standard size, such as:

 

width 100 height 120, price 10$

width 100 height 140, price 12$

width 150 height 120, price 15$

width 150 height 140, price 20$

 

and user can define 'custom' sizes, for example:

 

105 x 125

 

so it will be oversize 5 from width and 5 from height, which makes price:

 

standard price 10$ + oversize - each 1cm is + 1% of standard price

 

How it is possible to do this in Prestashop ? 

 

Do I need some special module for it ?

 

Thanks for your time & help.

 

Baso