I too loathe non payers. They waste your time, take an item from your listing that someone else could have bought and sometimes cost extra in relisting fees.
However, we do not exactly know what is happening in other people's lives, it is important to keep this in mind.
A number of years back I had a particular non payer.
Sent quite a few emails, no reply, so filed a non payment case and 4 days later closed it, got back the fees charged and relisted the item.
A few days later, the person's mother emailed to say he had been seriously injured in a car crash and was in hospital and described his injuries in pretty graphic detail.
She offered to make the payment, said he still wanted it and sending it would give him something to look at whilst in hospital, which I accepted, and sent on the item.
Taught me a lesson and that is that life is unpredictable and sometimes, just sometimes, things are out of our control.
Take for example, the floods in Townsville or the fires in Tasmania. This could well affect people who have made a purchase but not yet paid and will not pay, because their world has suddenly been turned upside down.
Best to just follow the eBay procedure, get back the fees, relist the item, then decide whether the buyer is a candidate for your BBL.
One sure sign of a BBL candidate is when people buy more stuff and pay others after not paying for an item they bought from me, people like that always get a berth on the BBL..
