A while back I bought an 8mm blank from GM for an 8x68 build. I paid $100 + $20 for shipping. After spending a day contouring it, I swore that I would never buy an untapered blank again. It is still too heavy, but I am dreading putting it back in the lathe to take more off.
In a 9.3 most will not want a "mountain weight" contour. If I were going to risk my capital for a large purchase I would want them F54 contoured for $125
