I don't think that is the same let me help you.
If a pawn shop sold me stolen merchandise, be that they stole it or just passed off something someone else stole. Then the police came and took it away. Would a review of that pawn shop selling stolen merchandise be unfair?
First of all, the fact you're comparing stolen goods in a pawn-shop automatically implies you're doing the same to Sage. If you have proof that he INTENTIONALLY did this, please provide it, otherwise your point is moot. Common sense dictates he's a reputable seller, which is the opposite of a seedy pawn shop.
Second of all, IF the pawnshop KNEW it was stolen before you came in to purchase it, and still sold it, THAT'S when the pawnshop gets punished. (Fines / Fees / everything else) If I walk into a pawn-shop tomorrow, purchase a new drill or whatever and the police find out it was stolen after the fact, they don't come knocking on my door to retrieve the item and they don't retroactively punish the pawnshop. The police will, however look for the person who stole it in the first place. (In this case, you already know it's Darkpaw). It's basically one of those tough-luck things. (Which is what I'm telling you now.) You don't get punished for all parties doing what is right.
Your analogy is this; the pawn-shop buys a Rolex; by all accounts, everything with the Rolex is fine and legal. You come in and purchase the Rolex. The guy who originally sold it to the pawnshop comes back and steals it from you. The Pawnshop didn't steal it. The Pawnshop didn't know it was going to get stolen. So you leave a bad a review on the Pawnshop to warn other people of bad business? Especially when you KNOW the person who stole it back had nothing to do with you, the pawnshop, or anything else. (Again, Darkpaw)
Third of all, it's rare, because in the 5 years or so I've been here, I have seen this exact same situation happen ONE other time. Just once. You make the second. It's not a conspiracy. We're not covering up. If this was a wide-spread thing and Kronos were getting deleted left and right, I GUARANTEE you Krono sellers would advise against buying them until things calm down. (They've done it before when actual roll-backs were happening) $60 isn't worth making a risky endeavor to put your reputation at stake.
Hell, you'd have more of a case if all 9 Kronos were deleted. But the fact it was 6 / 9? Use your brain man. You're implying Sage literally said "I'm gonna sell this guy x6 bad Kronos and only x3 good ones." That's so stupid I can't wrap my head around it.