Mike Nine dollars an oz. is rather expensive for SS casting grain.
I’m sure there are many places to find it at a lesser cost. I’ve
purchased SS casting grain for years from Meloon Enterprises in
N.J. ( 800-969-3331 ). The cost roughly comes to slightly above
($0.25 or so if I remember correctly) silver spot price. Tom
Meloon is one of the niciest guys I’ve had the pleasure of doing
business with. He also deals in continuious casting equipment.
Hope this helps you out. Rick