Newbie needs help - how to sell items/ scrolls

[Lysander]

I'm at level 21 on the easy game (new to this game, so wanted to start easy), and I have no problem selling scrolls, which I always do whenever I have duplicates. I've been doing this since early levels.

However, no matter what I do, I can't seem to sell items, artifacts, etc. I right-click on the item, and my choices are usually info, use, drop, and possibly upgrade, but never sell. I've tried left-clicking and dragging the item to an empty box in the castle's selling area, but I get nowhere. Is this problem because I'm in the easy level?

I've tried selling at castles and wherever else I can buy anything, but no luck.

Any suggestions?