Sale price for every two of a same product

[NilVeres]

Hello, I've come to these forums to ask if it's possible to set special pricing rules where, for example:

 

Product A has a price of $80.

 

If you get 2 Product A in your cart you get the special $120 price.

 

BUT the third Product A you add to your cart gets you to $200.

 

So basically

 

1st item costs 80

2nd item costs 40

3rd item costs 80 again

 

If the customer adds a 4th Product A then the 4th costs 40 again.

 

 

Is this possible within prestashop?

Where do I tinker to do this?

Thanks for the help in advance.

[NilVeres]

Bump.

I've found some old thread about this on the forums, but the question remained unanswered.