Resolved. Discounts Only for specific categories. PS 1.5

[Puriom]

Hello!
I need an addon or mod that will allow me
either:
to apply discounts only to certain categories

or

to exclude certain categories from global discounts.

It should be based on amount spent. (additional quantity based discount will be welcome but not necessary.)

 

P.e.Q Discount 15% on categories A and B over 50 euro. But this discount, even appeared to the cart won't be applicable to products from categories C or D.
It must suppress the products already in 'sales'.
 

The idea is to add a "category" radio button to 'cart rules' > actions, not allowing discounts to other products.

 

I use PS 1.5 but I'll upgrade to PS1.6. So, if its possible I'd like to have it working for both editions.

Many thanks.

P.S. I posted to the Addons section too, hoping there is something ready. (I don't try to force anything).

Edited October 7, 2014 by Puriom (see edit history)