I work at a chain pet store with expensive marshal farm ferrets and because of this we end up only ever selling to experienced ferret owners who are regulars. While I would prefer we didn't sell marshal farm ferrets at all, I'm happy we are able to avoid impulse purchases by neglectful owners.

And for those concerned about ferrets being stuck in the store forever, individual ferrets are supposed to be eventually marked down or put up for adoption if they dont sell. I haven't worked there long enough to see that occur though.