Actually, when making billet blocks it doesn't cost hardly anymore to make any block. The problem is we don't have a leader. If we did he would be offering B/RB/Hemi billet blocks, really ready to assemble, to ship this afternoon (in one of the stocking configurations) for $5,995. I would love to do it. I have the money, the shop and the inclination, like one of my heros, Keith Black. The problem is I am too old, too busy and never learned CNC machining like I should have. If I had a set of prints and a knowledgeable man to train me you would have blocks.
I would have to find out what the aluminium would cost for a block, but I don't imagine it's cheap. I have thought about doing a billet block and heads for myself, with no blocks available, it may happen just yet. It's one of those things I tinker away with when I get the urge.
