I prefer the leatherette to the real leather. It looks just as good and it doesn't get brown spots from the dye wearing out. And you can't see scratches very easily in leatherette. I am not sure when Rollei switched. Probably the second version of the F.
Re KEH, you could list it on ebay with a reserve of the KEH price and see if it sells. I am thinking you might get into that 3000+ range you were talking about.