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Soo-hyun, who has recently moved into a new house, buys a used washing machine through a second-hand app but finds out it doesn't work. Annoyed by the seller's irresponsibility, she leaves a comment calling the seller a con man, and reports it to the police. Little does she know that the seller is a psychopathic serial killer who uses an online second-hand market to lure his victims. Her comment renders his hunt for a new victim all but impossible so she becomes his next target. She starts receiving obscene phone calls, countless unwanted food deliveries, and strange men knocking on her door looking for a good time. A trip to the sender's address proves deadly serious when the police and Soo-hyun find a man’s dead body.

The main cast of Don't Buy the Seller includes: Shin Hye-sun, Kim Sung-kyun, Kang Tae-oh, Lee Zoo-young, Lim Cheol-soo

Don't Buy the Seller has a duration of 1h 41min.

Don't Buy the Seller has received a rating of 6.8/10 based on 77 user votes.