Hey Mike, thanks for the reply.
I saw the saw site and I had never seen it before. I must say "what beautiful work". I can't afford to buy one but would love to. As far as the hardness of the steel, what you say sounds good, but I know one seller on the bay who lives in Florida and is a plane blade maker. He always has new blades for Stanley #48 T&Gs on the bay.
He can send anyone his stock list (which is quite big!) and has great prices. But he takes his blades out to be hardened by a pro company that uses atmosphere controlled ovens, I think they create a vacuum inside while heating. But after that, his prices are still quite acceptable (that means it might cheap enough for you).
I think you have really good prices too. Just an idea, the seller is jimreed2160.