A historical example used to illustrate the concept of finding mispriced or mislisted opportunities — buying eBay items listed in wrong categories or with typos at below-market prices and relisting them correctly for profit.
"Way back in the Halcyon days of the early eBay, like 20 years ago, I made money by finding products on eBay that were listed in the wrong categories or had typos in the brand name or the description."
"I used to make money by finding products on eBay that were listed in the wrong categories or had typos in the brand name or the description so that when other people were looking for those items, they couldn't find them."