Things that are bought from vendors should show the cost to buy them as well as the price to sell them back. e.g. Chicken Egg shows 6c but not the 48c it costs to buy one ( http://lorebook.lotro.com/wiki/Recip..._Onions_Recipe ). This gives a false impression of what it costs to make a recipe.
Should also show both prices when looking at the Vendor - Novice Cook ( http://lorebook.lotro.com/index.php/NPC:Novice_Cook )for example.