I just bought a new '05 Limited Coupe 2 months ago. I paid $21.5 plus $400 dealer fee and taxes. Remember, you have to pay taxes on the manufacturer’s rebate which was in the neighbor hood of $6-7K IIRC. My total was about $23.8. So, I would think a base coupe for $20K is doable. The only thing will be how much the dealer is willing to loose to move the car.

Good luck!