I just spoke with one of their sales associates today about a Lexus vehicle. They do carry some cars that are at or below market price. However, you will have to research the vehicles thoroughly as they do carry lemon cars that have been released back out in the market (including the one i inquired today). But in their defense not all lemon cars are problem cars.
here is a negative review from one user:
http://www.yelp.com/biz/nash-auto-costa-mesa
Either way, i will go there to check them out. They seem to carry a wide range of Toyota/Lexus cars.