Geez, Then it's evident, that VPI has chosen to get as far away from the HW-19 as possible. Darn shame, as if they chose, they could still be providing some of these parts, and upgrades paths for literal tens of thousands of these tables still in operation. I believe there would still be a market for these parts.
No dohbt whatever parts are left in stock, are leftovers from old production, and they are not buying anything to keep stock up.
Not dissing VPI, but fact is, they didn't sell any of those parts without making a marginal profit.
A shame as well, that no third party picked up the ball, with things like custom Plinths, ArmBoards, Footers, and other tweaks.
As for the Bright Star Big Rock, one could make a very good clone at a considerable savings. A smaller sheet of 3/4" MDF 2'x4' would be enough to make the Bottom, and the insert for top, in which Places Like Home Depot sell for about $8
4" wide Oak for the sides, some Sand, some glue, and clamps, and where the gaps are around the SandBase Plinth, use 1/2" foam weatherstrip to hide the Gap. Shouldn't cost much more than $35 tops, even with some Stain, and poly Varnish.
I think I have a link for this simple DIY Sand Base, and will try posting it. Mark