First I'm not asking about adding a full-width banner to the top of the collection page.
How to place ads among products on a collection page? Vertical banners between the product rows and product image size ads randomly among the product feed. Is there an app for this or has anyone implemented the code for this?
Like if I have hundreds of products on the collection, a customer gets pretty boring watching the same list. I would like to insert ads like "buy one get one free for this collection" here and there.