Yes...one of the guys here where I work had his special edition Jetta for sale in the trader for a couple of weeks, and got a call from them. You list it upfront for some ridiculous amount of money, and the hook is that they can find a buyer for you that will pay more money because they can offer the potential buyer the complete package, from financing to delivery of the vehicle they want!
Morale to the story: after 3 months of slim action, only 3 calls, he dropped them. He got a dozen or so calls from the 4 weeks of Trader when he listed it there!