There's a lot of nice and unique items to be found in this scenario. Perhaps not as many as in Assault on Giant Mountain, but still a lot. I will list the most important ones below.
Bow of Shalomar +2
Longsword +2 Flametounge
Longsword +2 Frostbrand
Dagger of Shielding +2
Scimitar of Speed +2
Dagger of Styx +2
Dagger of Penetration +2
(Sword of the Paladins)
Robe of Speed
Robe of Strength
Robe of Many Favors +1
Robe of Enchanters +1
Volted Chain +3
Mithrahl Plate +2
Bracers of AC 8
Bracers of AC 4
Cloak of Light +3
Helm of Heroism +2
Gloves of the Huntsman +3
Shield +3
Dragon Breath +2
Shield of Happenstance +1
And last and least:
Ring of Regeneration
The store value of these items are about 242.000 gp. And remember that there's a lot of Longsword +3s and similar items that I haven't mentioned…