I purchased a G0490 jointer from Grizzly in January and it's worked great for me. I recently bought a spiralhead planer and decided to replace the straight knives in the jointer w/ a spiral head as well. The head has about 6 months of use on it and includes the bearings. I'm not sure what the price would be or if there is a market for it. It seems some people on here make their own equipment, so thought there might be some interest. Everything new from Grizzly looks like it would be about $175. How about $75 + shipping from Savage, MN 55378.