Cracked Sheaves on Drive Clutch, Suggestions? -- 2002 Sportsman 700

Hey, first time four-wheeler owner here. I was given a non-operational 2002 Sportsman 700 that I have been working on getting running again. As a mechanical dingus, this has been a learning process for me. I recently found that the drive clutch inner sheave has some cracks forming radiating out from the center shaft. From what I have read and seen, I need to replace the whole assembly, but the OEM website lists it at something like $600.

What are your suggestions for fixes or replacements?
Thanks!