Amazon aggregators are in the midst of a buying frenzy. They’re trying to entice sellers who have successful brands on Amazon with incentives like Tesla giveaways and exclusive parties. Some of the biggest Amazon aggregators, Thrasio and Perch, have valuations in the billions of dollars. In July, they were among the many companies in the space attending the Prosper Show, a popular conference for Amazon sellers. The marketing and recruiting dollars were flowing as they sought to lure sellers to join them. “People giving away a Tesla, just a lot of talk on the commissions if you’re able to bring in a deal, and just to be honest, it’s like the talk of the town,” said Casey Gauss, a vice president at Thrasio, which has raised $1.75 billion and acquired more than 125 Amazon brands since it was founded in 2018.