We have a couple hundred different manufacturers we sell products from and would like to run brand-specific promotions with a coupon code to encourage customers to buy $100+ worth of products from a specific manufacturer.
The closest we've been able to get with conditions in cart price rules is to get the rule to work when a customer has line in their cart totaling $100 or more from specified manufacturer, OR we can get it to work if a customer has an item made by a specific manufacturer and the cart subtotal is $100 or more.
We've been going with second solution and hoping that customers are going by the wording of the promotion and are putting $100 worth of items from that manufacturer in their cart.
Unfortunately, this lets customers who just put a single $5 item from this manufacturer in their cart get the $15 discount, as long as they have at least $100 total worth of products in their cart. Most customers don't realize this, and so the above solution works about 90% of the time.
We'd feel much more comfortable with brand specific promotions if there was a condition set that allowed us to look for a whole cart with $X worth of products from a specified manufacturer.