[edsouza]

The original seller did [0]:

  This summer, Ruckel tried a new approach: He put his own product on eBay and titled it “All other eBay sellers are fake.” A few weeks later, he stumbled upon an eBay listing with a familiar title. “All other eBay sellers are fake,” it said. It wasn’t his, of course.

[0] https://www.entrepreneur.com/article/278622