Go for it Leeroy! Just make sure you get a good one. There are quite a few low mileage 'demonstrators' about that have been run but dealership managers but they have often been abused and neglected cosmetically if you look closely, probably like the one you saw. The long exposed flanks are very vulnerable to parking dings. Also check the tyres, those 19" rears are EXPENSIVE if they need replacing.
Mechanically the Crossfire is very tough and well engineered. I have had absolutely no problems with my 54 plate (apart from buying it new at the top of the market!). I work on the car myself, (I never let it near the dealer) and keep a very close eye on things. With 17,000 miles on it the only things I have had to replace are front tyres and brake pads which is only due to track use and I will probably need new rears after my next track outing later this month. I have a cracked screen that was done at the airport, but that is not a Crossfire issue apart from the fact that I am still waiting for the replacement over a week later!

Mine lives a bit of a strange double life since I am meticulous about keeping the paintwork perfect (no auto car washes, always park well away from other cars etc), but then drive it really hard on road and trackdays. When its all washed and waxed it still looks perfect inside and out. It's a quality product!

Go grab yourself a bargain.