
First of all, stuff that Ruad makes is worth 0GP and therefore it can't be sold but that makes no sense since thats all good stuff that should be worth something. Other items are either worth 0GP or more and they can't be sold although they should be.
Robe of Enduring - found in the temple sewers, worth 0GP, should be worth something
Flail +3 "Flaming Death" - found in the temple sewers, worth 4350GP
Thunder's Bane - found in the temple area (locked/secret compound on Sion?), worth 1500GP
Semaj's Cloak - introduced from BG1 to BG2 by BGTTweak, worth 525GP
Dagger of "insert PC name" +1 - Planar Sphere Stronghold, worth 1GP
Trolls Skin +4 - don't remember where I got this, worth 1050GP
Moon Dog Figurine - Ranger Stronghold, worth 0GP, should be worth something
Green Dragon's Sword +4 - General Chang, Firkraag's dungeon entrance, worth 10500GP
Carsomyr +4 "Holy Avenger" - worth 2250GP
Corthala Family Blade +2 - 0GP, I can sell the armor but not the blade?
I'm sure I'll find more stuff that can't be sold (well there were some others but I kinda lost them
