Namely:
-Heleon's Potion
-Goblin Energy Orb
-Baldini's Bouquet
First, is there anything else you can do with the five Heleon's Potions you find besides give them to either Heleon or Bernard (or use them yourself)? Does Bernard ever obtain the recipe, which I assume is Ultimate Rejuvenation potions, and give it to you?
Next, the Goblin Energy Orb that's part of the quest for Bedwyr, to activate his enchanting machines again. It has a gold value of 20000, according to its stat screen in the 360 version, despite Kaan selling it to you for 5687 gold. I'm wondering, is it possible to sell it to someone else? The fact it has a value attached, unlike most quest items, makes me wonder...
Finally, that perfume, Baldini's Bouquet, obtained as part of the quest with the same name. Are you able to give or sell it to someone else other than Baldini? I know you can sell it to any shop for 1600 gold before you show it to Baldini (which fails the quest), but is there any other use for it?
I'm especially curious about the latter two, since the 20000 gold value is very suspicious, and the perfume feels like it should either be worth more gold to sell, or have some other function besides giving to Baldini...