Buy One, Save 50% on specific others
I'm trying to create a function that when any one of seven specific items are added to the cart at full price, then any other of these specific seven products can be purchased at a 50% discount. There are other products on the site that should not be affected by this. It is a static site.
For example product A can be purchased for $39.95. Then product B, C, D, E, F, or G can be purchased for $19.98 ea. One can buy one or all six remaining products for that 50% off. But product A is full price. I can't figure out how to exclude the first item that is added. I created a column value, and can get a 50% discount to be shown by creating a discount rule, but it takes 50% off everything.