The price is definitely low. Maybe the seller needs the money in a hurry??
He's got a bunch of other things he selling so perhaps he just wants a quick sale. Below are the other items he is selling:
Kirksaeter Prism 210 high resolution, efficient $450.00
Bryston 28bsst black powerful,delicate $6700.00
Wadia 171 silver great transport $400.00
Pangea Power Cord ac-9 7gauge dynamic,queit! Sold
Gorgeous Rack Inlaid wood 5 shelf see pictures! $700.00
Krell S-1000 Black preamp/processor/dac Sold
Nad master series M2 direct digital amp $3200.00