Man Buys a Broken $1,500 Compressor, Sells It for $12,500, Then the Seller Demands It Back

Anyone who regularly buys secondhand items knows that marketplace prices can be unpredictable. Sometimes sellers want something gone quickly, while other listings are cheap because repairs could become expensive. When an unusually attractive deal appears, deciding whether you have found a hidden gem or inherited somebody else’s problem is part of the gamble.

One experienced flipper thought he had taken exactly that kind of calculated risk when he purchased a broken-down compressor advertised for $1,500.

After putting his mechanical skills to work, things went remarkably well, until the woman who sold it contacted him with an alarming explanation about the listed price. What followed included an angry demand, accusations of taking advantage, and even talk of a lawsuit. Keep reading to see how the dispute unfolded.

A buyer turns a broken $1,500 compressor into a $12,500 flip, then faces legal threats after the seller admits the price was a mistake

There is a special kind of buyer’s remorse that becomes someone else’s legal problem only after the bargain has disappeared. A seller can make an expensive mistake, but realizing afterward that an item was worth far more does not automatically transform a completed transaction into something the buyer is obligated to undo.

The buyer in this story did more than spot a cheap listing and immediately resell it. He drove nearly two hours, inspected a non-running diesel compressor, accepted the risk that it might require major repairs, paid the advertised $1,500, transported it home, diagnosed the mechanical problems, purchased parts, repaired it, and then found a buyer willing to pay $12,500.

The seller’s explanation came only after the repair and resale. Her claim that the intended price was $15,000 therefore creates a dispute about the original agreement, not simply a request to reverse a bad bargain.

There is another perspective worth considering. An obvious pricing error can sometimes create legitimate legal questions, particularly if the buyer knew or reasonably should have known that the seller made a mistake. If an expensive machine were accidentally listed for $15 instead of $15,000, for example, a court might view the circumstances very differently.

Here, though, the equipment reportedly did not start, the advertisement acknowledged that it ran poorly, and the buyer believed the low price reflected potentially serious mechanical problems. Those facts make the situation less obviously exploitative.

Contract law generally focuses on whether the parties manifested an agreement and whether there was a genuine mistake affecting that agreement.

The Restatement (Second) of Contracts, a widely cited authority in U.S. contract law, recognizes that certain unilateral mistakes can justify rescission, but only when specific requirements are met, including circumstances involving the other party’s knowledge or responsibility for the mistake. A mere seller’s realization that they underpriced something does not automatically satisfy those requirements.

That distinction is important because the buyer’s behavior does not sound like someone who discovered a typo and knowingly exploited it. He appears to have evaluated an apparently risky machine at the advertised price.

He then added value through mechanical expertise, labor, parts, and risk. The fact that he eventually found a much higher resale price does not retroactively transfer that profit to the original seller.

Still, “sounds like I’m in the clear” should be treated cautiously. The actual legal outcome could depend on the jurisdiction, the exact wording of the listing, communications between the parties, ownership documents, and whether the seller can establish that the transaction resulted from a legally significant mistake.

Blocking her may stop the harassment, but it does not prevent someone from pursuing a legitimate claim if one exists.

The buyer’s strongest move was therefore not the $11,000 profit. It was preserving the evidence: the original advertisement, messages, payment information, and documentation showing the machine’s condition when purchased. If a genuine legal demand arrives, those records can be far more valuable than an argument over who feels cheated.

These are the responses from Reddit users:

These Redditors advised saving the messages, blocking the seller, and moving on

These commenters stressed that OP took the repair risk, so the resulting profit belonged to OP

These users suspected the seller only regretted the deal after discovering OP had resold it successfully

These commenters favored ending communication quickly rather than getting dragged into an unnecessary dispute

Was $1,500 obviously a typo or perfectly believable for broken industrial equipment? And after accepting the advertised price, how much responsibility should a seller bear for checking one very expensive zero?