I very rarely return items, but received some DOA batteries from Amazon recently (for an Eve contact sensor - 1/2 AA batteries are a real pain to source).
I found the return process to be wildly low friction. I didn't have to print or package anything. I initiated the return, and the next day an Amazon delivery driver came to my door and I handed them the unlabelled pack of batteries.
I have specifically asked Amazon customer support if they could do this (pick up the return) for my elderly parents who have Prime. They never agree and insist on printing a label. They don't have a printer. I have asked them about this at least five times.
I found the return process to be wildly low friction. I didn't have to print or package anything. I initiated the return, and the next day an Amazon delivery driver came to my door and I handed them the unlabelled pack of batteries.