Model number FEX831CS, looks to have been replaced by this unit: 
http://www.frigidaire.com/products/home-appliances/washer-dryer-combination/fex831fs 
Although I see no difference.  Dimensionally, they are the same.   
This unit is about 6-7 years old I would guess.  Works great.  It was originally bought for my old apartment, and doesn't fit very well in my house so I replaced it about a week ago.  Has some scuffs and a couple small dents around the bottom section, but its only cosmetic.  This was rather expensive when it was new.  Comes with a super long dryer hose and a 240VAC cable hooked up to it.  It's in my garage ready to go.   
$300 
EDIT NOW $250   
http://i412.photobucket.com/albums/pp201/copperhead035/for%20sale/IMG_20110322_001822.jpg 
http://i412.photobucket.com/albums/pp201/copperhead035/for%20sale/IMG_20110322_001808.jpg 
http://i412.photobucket.com/albums/pp201/copperhead035/for%20sale/IMG_20110322_001848.jpg