Yep, I'm willing to bet you'd end up with a knock-off.
That said, some of the knock-offs can be pretty convincing.
I went to a home party where they had "Tiffany" jewelry for sale.
I wore my real deal bracelet and although the knock-off they had didn't feel quite as sunstantial, it sure looked just the same.
They even had a copy of a piece that had only been out for about a month.