Satchmo, How to apply a discount when buying a bunch of special product

[pepper.yen]

I'm new to Satchmo, and sorry for my poor English

When I using discount, I got a question.
I want apply a kind of discount that when customer buy a bunch of
special product (each of them).
And pricing will auto apply the discount when checkout, no need enter
discount code (Maybe it's another problem)

Thanks a lot!!!

[pepper.yen]

I want apply a kind of discount that when customer buy a bunch of

special product (each of them). <-- It's mean buy all of product

For example, there is ProductA, ProductB, ProductC in the list
and someone buy ProductA, ProductB and ProductC then get discount
if someone buy ProductA and ProductC then there is no discount

[Bob Waycott]

You should be able to handle this very efficiently by way of Satchmo's signals.