Plegg was great Ferengi enterpeneur. He took a computer chip and turned it into the modular holosuite industry, bringing holographic entertainment to the most remote parts of the Alpha Quadrant, creating profit centers from societies that could barely afford to feed their own people.
In 2370, Quark attempted to sell the dessication discs of Plegg aboard Deep Space 9 for a three strips of latinum. Odo approached Quark, feigning interest in purchasing a disc. Questioning the authenticity, Quark pointed out the Ferengi Seal of Dismemberment, which described the contents as those of Plegg.
Odo, then revealed to Quark that those remains were not those of Plegg, and that, in fact, Plegg was still quite alive and currently residing on Khosla II. When Odo contacted Plegg about Quark's scheme, Plegg found it quite amusing.
Quark then claimed that he was the victim, and that the five thousand discs of Plegg he had in his storeroom were bought in good faith. Once the question arose regard who the remains belonged to, Quark demanded an investigation, which promised he would get. (DS9: "The Alternate")