The Stihl dealer will shoot you a quote of a new oem piston/cylinder, and labor, maybe seals , bearings, etc. That should be over $400 there.
Why?
As sad as it is set up, you will get your money back, if you follow their guidelines...........
The seller doesn't have any choice in the matter.
I sold a new fuel line and filter a few years ago, a guy contacted me saying item was not as described. After a lot of back and forth, I said
"Just send the part back with the mailer it was in, and I'll send another".
The guy was stupid enough to send both parts of the fuel line, and the mailer that was opened with a razor knife. I contacted E-bay, and
told them the details. They said to send him another, or give him a refund. If you don't, we'll take the funds out of your account. And
he will possibly also give you a negative.
I asked, even if I give him another, can he still give me a negative??? Why yes, of course.........
But suppossedly that policy is changing in May, how much it will change in reality is hard to tell.