WTB -- Look Keo Compatible Road Pedals

I swiped the pedals off my son's bike and put them on my new tri bike. He's gonna notice it pretty soon and be ticked off, so I'm looking for a good set of light used Look Keo compatible road pedals. Note that I have a Fi'zi:k Wing Flex tri saddle in good shape that I'd like to trade for the pedals, and a like-new Forte T1 tri saddle that I could work into the deal some way. But that's not a deal breaker. I could buy them outright, also. Thanks.