If this company has a good returns policy, as in "money back if not completely satisfied", and you're willing to let go of a couple of hundred simolians, then I'd say go ahead and buy them, then take them straight to a good 'piper and have him/her test them, and then make a decision about keeping them. At best, you might wind up with a playable stand of 'pipes. At worst, you have a $200 ornament to go over the fireplace.
It's interesting the the website does not mention which military these 'pipes allegedly came from, nor does it mention a maker, but it does use up a whole paragraph describing a scene in a movie. That raises some red flags, right off the bat.