After seeing a grilled cheese sandwich sell for $28,000 on eBay, a mother found she could raise $5,000 to save her ill son by selling a single bumper sticker.

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Virginia resident Tiffini Dingman-Grover saw the bidding on her bumper sticker, which reads, "Frank Must Die," reach the $5,000 mark Wednesday night, the New York Daily News reported.

Frank is the name Dingman-Grover's 10-year-old son, David, gave to the once grapefruit-sized tumor at the base of his skull. After $1 million worth of medical treatment, largely covered by insurance claims, the tumor has been reduced to the size of a peach pit, but David needs a new biopsy to determine the tumor's state, and the insurance money is running out.

"It's been wonderful; I never anticipated this at all. It's been amazing, absolutely amazing," said Dingman-Grover, who got the idea for the eBay sale after a partially eaten grilled cheese sandwich allegedly bearing a likeness of the Virgin Mary sold for $28,000.