Selling random farmed armor and weapons to vendors in Skara but they don't say anything when items are sold. The gold goes in my backpack but they don't say "you have sold x items for x amount" or whatever it is they are supposed to say. This is a recurring problem happening for the third time in a row.
Have you checked to make sure you don't have the sell agent enabled in Razor? This seems the most likely cause of an issue like this, because you are actually still receiving the gold, just bypassing the sell-gump which is one of the perks that the sell agent offers. Edit: Testing this myself, it appears that with or without the sell agent in effect, the vendors still do not speak with you after they have purchased an item(s) from you.
