Why no American versions of Bargain Hunt or Cash in the Attic?

TV Arts

I am kind of shocked the TLC hasn't done an American version of these
two shows.
I would think it would be fairly simple to do. It would almost have to
be easier then Trading Spaces. 

For hosts I would use the brothers from Find. Each brother taking a pair
around then the two brothers going through the stuff debating if it was
good or not. Hundreds of local auctions can be used.
Bargain Hunt would be my choice for an Amrican version.
I have seen bargain hunt (a UK show) and I was not impressed.  The
concept sounds
interesting but it just falls flat.  It  comes off lame and silly (part
of the problem may
be the host who looks and sounds like Dudley Moore).