as my old man would say : "a buck 2 ninetyeight"...................

all kidding and wizea$$ery aside, that looks like a nicely designed and executed kit, based on my extensive fabrication and machining background.
as hemi parts in general are expensive, and throttle cable brackets alone can be between $40-65.00 just for the common wedge blocks [depending on carb application], in just my [probably worthless] opinion, your kit may be realistically worth around $150.00-175.00+ or so.
this depends entirely on A : how much time, effort in design, and expense you have in producing it, and B : how much you need/want to recoup your investment costs, less your time involvement. [one never seems to get back "the time invested element" in anything. or so it seems. ]
just my worthless opinion.
YOUR mileage WILL vary............

That looks nice and clever - I'd prefer that over the Lokar kind of deal, if I had a need for it.
I'd guess around $100-$150 each is fair, and I'd pay that.
I don't know the prices on the Lokar or Bouchillon setups though, so I may be wrong.
I think advertising them would be my 1st choice.
Maybe AndyF can advise, or maybe contact Mancini's and see if they're interested.
But if you just want to be rid of them, maybe try the engine section here or Ebay.

sorry about not replying about the shrink tube.
i still have a somewhat good supply left, and i was just wondering what was out there when it comes time to get/need more.