
I know the DM has final say and that prices for goods may vary from setting to setting, and game to game. However, the players handbook, and other references have a base cost for items such as armor, weapons, trade goods, etc. For example, PHB page 145 has the table for armor. Leather armor costs 10 gp. But if I look up leather armor in the compendium, all I get is AC, rarity, category, and weight. I tried to see if this suggestion has already been made but couldn't find anything. So I hope I'm not duplicating this. Anyway, that's my suggestion, add the cost and other properties to the compendium.