For months, we achieved a 3+x return on ad spend, tripling their profit. Cost per purchase numbers were down to less than $3 in some cases, and the costs per add-to-cart numbers sometimes were not even $1!
For a product that is sold at a lower cost, we needed to attain high volume to make these numbers happen. Consistently getting purchases across new and different audiences, creatives, and offers, we began to scale the ad budget so that our 3x return on ad spend stayed the same, but our overall revenue increased with each scale.