Check out
http://www.truecar.com/ for pricing. You'll need a very aggressive dealership to match but it isn't unheard of. If anything, use it as a reference for what a reasonable negotiation point may be.
OT; the VW Tiguan is actually cheaper then a GTI here in SoCal (both equip with DSG). It's essentially the same car, just in mini SUV form.. Offers more practicality, more comfort, and retains much of the thrills for commuter driving (same engine, transmission, similar driving dynamics, etc.). The GTI may be slightly more potent at the track but the Tiguan is a better vehicle to tow a cheap track toy or kart
