After reading about a well reviewed & received mid range guitar I visited the vendor's website. Received a 15% discount voucher on what looked like a slightly jacked up price.
I added it to the cart, then changed my mind.
About 8 hours later I get a reminder email about the cart.
A couple of hours another email from the Thunder (get it?) shop site, this time with a 25% discount voucher. OK, sold me. Deal done.
The same shop sells a rather nice multi effects + looper + drum machine pedal. Put that in the cart and waited.
Got the reminder and 25% discount voucher just now.
There endeth the lesson.
Their metrics probably tell them that after eight hours an abandoned cart tends to stays abandoned forever.