I've set up a cart price rule: Buy A, B, or C sku and get $30 off another A, B, or C sku. So the customer would have to purchase say two A skus to get $30 off. The problem I'm running into, is that even if there are 4 A skus it will only take off $30 vs $60.
Here's how I've set up the rule:
If ALL of these conditions are TRUE : If total quantity equals or greater than 2 for a subselection of items in cart matching ANY of these conditions: SKU is one of A, B, C
Apply: Fixed amount discount for whole cart Discount Amount: 30 Discount Qty Step (Buy X): 2