they charge the dealer by providing sales, so yes they are working for the dealer...but the only way they can provide sales is by getting the customer a good price. So they are working for the customer.

and carsidrect is for new cars, I think you are confusing them with cars.com

actually your point that they have a refund policy led me to go look at that page...and my opinion is now even worse. Apparently that money only gets you one car. So you can't cross shop the best deal on a Civic and a Corolla to see which is the best option, without paying even more money.