The buyer can always lie about not having receive the products, I don’t see the point here.
And where I life, we have to sign to the delivery company that we have accepted the package. So anyway it would get to the point, that the delivering company has send the information. And also thats why we have a 14 days sale or return warranty, so the customer can assure that the procducts are as wanted.
I don’t see the problem in relying in other “authorities” and here the opposite is the case, when 2 enities are in conflict, an external “authority” is the best thing to rule this out. Each side would try to get the best for itself.
the advantage is clear: if I send a product back and it is accepted by the seller. I don’t have to wait till the banks refund it. Which can take the whole weekend or more. The higher the amount of the purchase the better
And even more is possible: if one of the trading parties is not satisfied, there would be the possiblity to freeze the amount. So no one could run off with the money. And with an dID from legal authorities like the court. The amount could be send to the entities according to the judgment of the judge.
benefits: no one could run off with the money