Toveling Plates

Question

Hi Rabbi: I heard from a reliable source that instead of toveling dishes etc, you can sell them to a non Jew, as we do with our Chametz on Pesach. Isn't this something we would do be'deved, or is okay to do. Isn't that looking for a loophole. Shouldn't we rather eat food off of legitimately kosher plates? And if its not, and totally fine, why dip everything in a mikvah when you can just as easily sell it and use those two hours of dipping dishes doing bikor cholim or another mitzvah? Thank you.