 For one thing, it will tell them whether there's any kind of warranty on the vehicle or not. In fact, there was a warranty on many of these vehicles, but by consumers not getting the buyer's guide, they didn't have any information about what they'd even ask about the warranty. They didn't understand the terms of warranty, so they missed out on that key fact. An online seller, even if the merchandise is a car, must provide options to cancel and get a refund.