I'm trying to get a cart price rule to work and I think I'm about 90% of the way there but can't quite figure out what I'm missing.
Here's what I'm trying to accomplish.
Purchase any 2 from category X get 25% off both. Sale would repeat for every quantity of 2 (2,4,6,etc). If 3 products from category X are in the cart, the sale would apply to the 1st 2 but not the 3rd item, until a 4th item was added. I can make the sale work if there are 2 or more items but it applies it to every quantity greater than 2 (so items 2,3,4,5,etc). I'm not sure how to make it only apply to every 2 items.
I've tried adding 2 in the Discount Qty Step but that seems to force the quantity to be based on the SKU (line item total) not the category total. So if I have 1 SKU #1 and 1 SKU#2 the discount does not apply but if I have 2 SKU#1 then it does apply, which is not how I want it.
I have also tried changing the conditions to if total quantity is one of 2,4,6,8,etc however if there ends up being an odd number in the cart the discount is removed completely from the even quantity items. So instead of item 1 - 4 being discounted and the 5th not, there is no discount applied at all.
Any ideas how to set this up?


Thanks.