Single post in Recent Trade with a Single Person

Your trade history already tells you everything you would possibly need to know. It shows what pokemon (or if it was a gift) were traded, It shows if there were items traded, it shows what kind of money and how much money was traded, and it even shows if there was a message. By mousing over the little yellow boxes, it shows you what items they were, the money comes with both the symbol and the number amount already visible, and the message if you mouse over it you can read it again. So really, you already have everything you're suggesting. As for seeing if people resell pokemon you sell to them, well once you trade it to them its their pokemon, they can do what they want with it. Besides, you can just check a pokemon's personal history to see who its been traded with if you really care.