Raze? Do you have like me a "collection mania" for Enchantments ?
Now, if I sell potions, I sell the one that give much more gold than L1 or L2 potions ...

Now I sell sometimes a few potions, but later on, if I have more Potion formula's, upgrading my Alchemy Garden and take another point in Master Herbalist or simply do it via skillpoints on equipment : I bought in Broken Valley a Bracelet with + 1 to Master Herbalist and on my current level Abram in Eagle's Nest is selling a Yewellery item with + 2 to Master Herbalist ! - of course I WANT that item, but spend almsot all my godl at the end of level 23 buying some new L7 & L 8 Potion Formula's by the happy "Mr Poirot-like-speaking" - Zarniyar at the Plaza in Aleroth city

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I gonna try to play the whole game (FoV incl.) without unlearning all my skills.
Because of I trade a lot I have not much gold ... but I've upgraded my runner Harry twice, so (2 x 1000 + 2 x 2000 gold =>) 6000 Gold spend on my Herbs runner .
Maybe stupid not to take first Dick or Tom, but I love the Alchemy and so I wish to make later on many many great potions to sell away (or use them if I need them!). Potion L6 or L7 give already almost the same sum in gold as a Diamond ! I've bring also all the Fanny Blossoms with me from before taking over the BT (around 80 pieces) ... so soon I'll be rich

....
Now my hero Jurdenson reached level 24 . It's the first time in a RPG I used the Summoning Skills frequently and to be honest, the Priest Skills are magnificent !!
My favorite above all is my lovely Ghostly Summon Ghost

... but also Fear is fun ! And Master Herbalist, Summon Undead & Demon (the last one I gonna try later), Curse & Charm, Blind, etc ...
Form the Mage Skills I invest 4 points in Firewall and since my hero is an Intelligence based hero his Strength is much lower (as is his melee protection), so Firewall is great to fast kill melee fighters who try to kill me

... Wirlwind and rush Attack are so far the only Warrior Skills I used . I didn't invest in Mindreading, Wisdom or any kind of Weapon Expertise . Now I've 12 skillpoints left, zero statpoints left (putting all points first in Vitality early in the game and later more & more in Intelligence. The rest a little into Spirit, Strength and Dexterity ...
I only take a sort look into one of the Flying Fortresses areas, I don't remember which one, but I was fast stond dead ... a poisonous dart from a level 24 (or more) Ranger go straight through Jurdensons body ... luckely I saved before going through that portal ...
But so far I've seen the re-design of that Flying Fortress is very well done, thanks to the Librarian's, ... euhmmm ...

... (search in his stack of books from the library of the Maxos Temple ...) ... I mean, the Larian's, my excuses !
So far I've played all on nightmare difficulty except 1 fight : Zagan ! For me that battle is on casual difficulty also very hard

... ! What I know : that is the fact I'm always much more "clumsy" (with the xbox controller & fighting) in close areas like Caves. When I've place to run/fly back, all fights are much more easy for me !
I did the fight against Zagan like this : transform into Dragon, before his HP goes to much down, transform back in human, regenerate, save, back dragon etc ... it was a fight I lost many times, also on "casual" ...