Well, purely statistically, LV probably does take back a fake unwittingly once in a rare while.
Because they generally take it away and inspect it within an inch of its life before they’ll give you a new bag/credit/your refund/whatever it is, but not EVERY SINGLE TIME. We have established this in other threads, that sometimes they don’t inspect it very thoroughly right then.
So again, purely through numbers, if you do cursory returns enough times, some small percentage of those will be mistakes, especially if the SA was newish.
But at some point before returning the item to sales stock, it surely must be inspected more thoroughly. At THAT point is when they’re then going to find the vast majority of whatever small percentage of fakes made it past the initial return. They’ll destroy that piece, adjust their inventory, and take the hit. Probably notate the customer’s account and confer with the employee.
Let’s assume they DIDN’T inspect it for real afterwards and just put it back out. That same SA is unlikely to be the same one who handles it every time it gets brought out to show someone. One of the other SAs is going to catch it handling it.
Has it ‘ever’ happened that a piece got returned, didn’t get caught then, didn’t get caught before restocking, didn’t get caught by any SAs showing it, and didn’t get caught by the SA wrapping it to resell...? I mean....again, statistically it’s POSSIBLE, but highly unlikely.
It’s also statistically possible to be struck by lightning, be in a school bus accident and die in a killer bee attack in the same week, but the odds are small enough that for practical purposes you need not fear such a week.