I have heard that the fit and finish on the Palmer Guns was not up to snuff. They are exactly the same design, so if the gun looks good to you and you check out all the normal things about buying a used revolver (i.e. timing, cylinder lockup and end play, trigger, etc) i'd say go for it. The price is about right if it has all the barrels and the original case. Original pistol packs in the original case bring a little more that all the same stuff pieced together in an aftermarket case.
Good luck,
Roll Tide