I used CarWoo for my first dealership purchase. I was not even considering buying a new car, so I just signed up on CarWoo on a whim. However, I was shocked at

I used CarWoo for my first dealership purchase. I was not even considering buying a new car, so I just signed up on CarWoo on a whim. However, I was shocked at how low one of the offers was, only about $1-2K more than I was willing to spend for a used car. (I was also having major problems at the time finding a decent non-shady "newer" used car.) I ended up buying new rather than used, and with only minimal hassle at the dealership. That said, if I had done a lot of legwork I could have found the deal independently, since it was advertised in the dealership's flier.