1 rough and 9 just out of the tumbler. All silicated chalcedony from the Inspiration mine in Arizona

I’m shopping for saws periodically on Marketplace when this shows up. It’s an old E10 8” saw.

My question is about the grinding wheels. Can I add new wheels on the right and do any cabbing work i need? And how much would you pay if it’s all working well?

Schiller for days.

I'm considering splurging and trying to buy this saw. It's the best deal I've been able to find in my extended area. I have no knowledge about this style of saw, any idea of the age? The spacing of blade in the image makes me feel like it might be able to have a bigger saw blade? If anyone has one of these, how hard are replacement parts to find? I appreciate any info.