Considering we're fairly close to eachother, this might be of help...
I had mine listed for $23k for nearly 2 months, and there was very little interest in it. I had it on Craigslist, Auto trader, and a few forums. It had sport/premium packages, sunroof, and 35k miles.
I ended up selling it back to the dealer that I bought it from for $21,500.
With your miles I'd say you should be able to sell it quickly for around $19k-$20k. You could get more if you wait until the weather warms up and people start getting tax money back.
'09 PBM GT: 579hp/552tq - SOLD