Do I have to remind a non-payer? Moral dilemma!!

[seeker]

I sold an item on November 1. No contact from buyer. I would usually send a friendly reminder at this stage, then open a non-payment case in about a week or so.

But I mislisted this item, and only got about half what I was hoping for. Would it be very bad to just to lie low, then relist if the buyer doesn't pay by, say, the end of the week. Or do I have to open a case?

if you don't go through the process they could eventually pay and then you will be in a pickle