Sounds interesting! Consumer psychology is a really fun topic that I always enjoy reading about. I also find it incredible how digital marketers keep reverting back to old techniques including those employed by the Chinese during the Korean War.

I was checking out bookbinders and I came by: https://www.gogochimp.com/helixbinders . What jumped out at me (literally) was a popup offering 5% off. You'll notice that it only triggers if you begin to scroll and therefore already engaged with the content of the website.

It's worth checking out if you have time.