I'm using Adam e-commerce tutorial to build my e-commerce site, but I need to make a change in the cart render script. I need that if you change the quatity of a item in the cart and that quatity past certain amount the price of that item change to a second price.

If you buy 1 the price is lets say 5.99 but if you change the qutity to 11 the new price will be 4.99 and so on ....

Can any one help me in this change...