I have also some .at domains but it seems as if nobody thinks they are any good here despite the obvious branding some creations have.
At dnjournal I saw some not so "brandable" names went for away for quite good sums, e.g.
Carpet.at @ over $4,200
DVBT.at @ over $1,900
Restaurants.at @ over $9,000
Restaurant.at @ over $9,100
Partyzelt.at ( ("party tent" in German) @ over $4,200
PrivateBanking.at @ over $2,400
KFZ.at @ over $7,700
Geizhalz.at (cheapskate in german) @ over $2,300
Meinewerkstatt.at ("my workshop" in German) @ over $5,000
AutoAuto.at @ over $8,500
Fotos.at @ $10,957
Cards.at @ $10,726
Car.at @ €9,000
Bingo.at @ €5,000
Testbox.at @ €4,000
Anif.at @ €3,000
You make up your own mind about the potential of .at domains.