Ask HN: Community of Car Buyers that Share the Price of their Purchase?

You can go to any car forum and ask the people there what they paid or the best price you might be able to obtain. They're generally willing to share and happy to get someone new into their communities enjoying the same car they are passionate about.

I misinterpreted the meaning of this thread, but it occurred to me the misinterpretation was also a great question-

Is there any site where different prospective car buyers can pool or "mob shop" their purchases in order to get a volume discount?

(e.g. I want a new 2013 Chevy Cruze, and so do 49 other car buyers; when a critical mass of 50 is reached within 3 months, the "tilt" buy takes place and we all pay 0.90 * dealer invoice). GM (or one of their high-volume dealers) makes next to no profit on each vehicle but they keep their numbers up. Could perhaps even Hotwire-style it and limit it to (again, for example) "Chevy Cruze, Ford Focus, or Toyota Corolla" where you don't get to pick which.

For used car prices, check out Carsabi. They got acquired already, but the site is still up. http://carsabi.com/

I'm working on whathavei, a personal inventory and social shopping app for people to track and share information about all the products they own. I definitely want to incorporate information about what people paid for and where they bought things. http://www.whathavei.com/

Let me know what you think about having this app, and specifically about this feature and for cars. Thanks