I want to know if it is possible to have multiple versions of price lists to use directly from the e-commerce of the website.
example:

1- up to 5 items in the shopping cart, each item costs $ 100.
2 more than 5 items in the shopping cart, each item costs $ 80. Etc.

I tried to do this from "sales" - "price lists" - "price lists", adding a version in the price list "public price list" but the system only recognizes me the highest price. If I add more than 5 items I keep getting the highest price that you add more products.

Anyone know how to do?

I'm using Odoo v.8