It's only a matter of time before this seller falls victim to a scammer - once they're found. I used to work for a book publisher who started doing their own e-commerce, and at the time one of the payment methods was a "pay later" one that predated the internet ("acceptgiro"). It only took a few months (if that) after the first sites went live that someone placed an order for a few hundred euros worth of books and had it delivered at a storage unit address. We scrapped the pay later payment option for orders over a certain amount then, and I'm sure later on the pay later option was removed entirely in favor of pay in advance methods.
There's newer pay later schemes now (Klarna IIRC) but the risk and debt collection falls to this payment provider. Of course, they got in legal trouble recently because they're a loan / credit company but didn't present the user with the right legalese for that.
In another post it was revealed that the owner passed away in 2023. While I'm as certain as you that there was some level of abuse, it doesn't seem to have been enough to make him change his ways.
Consider also that if you have a plumber, electrician, or some other tradesperson come to your house, you don't pay them until after they have done the work. You could choose not to pay them, but they have your address, and you'll never be able to do business with them again. On a small enough scale, this is all you need to prevent abuse.
Unfortunately, fraud is a part of business. During my time at Intuit, Apple, and Shopify fraud was a huge part of everything I worked on. When I was a teenager working at a gas station people would just run out the door with a 24 pack of beer.
That's just business, you need to price in disturbances like an important customer going bankrupt or switching suppliers or some customers refusing to pay for other reasons, and do a risk assessment before supplying on large orders.
It's one of the earliest lessons you'll learn from starting a company. Another close one is to not waste time on failed sales and annoying customers, replacing them with new customers is usually more profitable and enjoyable.
It's only a matter of time before this seller falls victim to a scammer - once they're found. I used to work for a book publisher who started doing their own e-commerce, and at the time one of the payment methods was a "pay later" one that predated the internet ("acceptgiro"). It only took a few months (if that) after the first sites went live that someone placed an order for a few hundred euros worth of books and had it delivered at a storage unit address. We scrapped the pay later payment option for orders over a certain amount then, and I'm sure later on the pay later option was removed entirely in favor of pay in advance methods.
There's newer pay later schemes now (Klarna IIRC) but the risk and debt collection falls to this payment provider. Of course, they got in legal trouble recently because they're a loan / credit company but didn't present the user with the right legalese for that.