pistons are still available for both around $50 new OEM and AM cylinders are pretty cheap as well
make SURE which oil pump they have the older style is NLA anywhere except used on Ebay and they fail at a high rate, if it needs that oil pump it is worthless except as a donor saw for some other parts
034 plastics are not available reasonably so if they are ugly/damaged that will hurt resale
If you are comfy rebuilding saws they should bring $250 each in the next month (I am in Columbus, might be less in smaller communities) so $100 with $100 fix it budget nets you $300 for a few hours work, if all goes well.
Make SURE The electronic is not an electronic quickstop with the rare, crappy brake setup, there is a guy on AS fighting with one now.
It was a revolutionary innovation that everyone hated like the red light
Dave