Purchased my 05 Roadster Ltd Automatic in June 08 with 16,000 miles paid $19,000 This car was like showroom. With recent decline in car sales price sounds about correct. Should still be warranty from Chrysler. If the battery is now Ok for a year they must have found the problem. Mine is still original from Jan 06 and still works fine and has been sitting for 4 months with only a few starts to keep it up.
This is the most fantastic car I have ever owned among 57 Chev. 67 Chevelle, MGBs and so on.

This site has many electrical problems reported with all years but from what I have read everything has been easily fixed, seems that keeping a battery in good shape is critical, low battery causes problems. If you purchase keep up with the news on this site. Go back and read as MANY things came up I had no idea the car was capable of or had as features.

Go for it.