Hey Josh,
It depends on the finish you choose.
24k Gold plating and Chrome plating are not cheap.
Fortunately Gary sells his work for about 1/3 to 1/2 of what it would typically sell for in the retail market.
I am pretty sure he built a set of those 120 watt mono-blocks for one guy for about $5,500. for the pair.
He has a new version of it that sounds even better that I think he can produce for about $4,500. for the pair.