Every object you add pushes the whole order down. The discount comes off the full bag, not one item — so the more you stack, the cheaper everything in it gets.

1. 20% off the whole bag
2. Shipping on us
3. A Cap, free, on top of the 20%
4. 30% off the whole bag, Cap still free

The Cap has to be in your bag before we can take it off — add The Cap.