A bit of a risk buying a seald one IMO. Would you ever open it? And if you did what if you found it wasn't 'The Object' at all BUT it was a brick!!! Just under $2k at the moment. The last one I saw on ebay; not boxed and badly chipped but had the pink primer showing through on hairline scratches, went for £900. So it could turn out to be the bargain of the century.
Triplet Kick. I worked out some dimensions a while ago to start a similar thing to what you are doing. I can't find them on the laptop I'm on at the moment but once I get time I'll check on my other computer and storage devices to see if I still have the measurements. I gave up with the project as it became so damn complicated to work it all. Hence the artist made 1 and cast the others from it. I wonder if the cast still exists OR could you make a cast from an original in perfect condition? $$$$$$$$