Hmm, considering you need 2x Essence of Sunlight, Griffene Blood, and Rain Water to make theese, there's no way you would ever see theese for 40pp each. Probably a minimum of 600pp is more likely.
Look at the dates, when those prices were posted, Heraldic armor did not exist. Since Enchanted Full Plate was the best you could make with it at the time, essence of sunlight used to sell for 10pp each.
Royal Temper is one of the components needed to make the new Human Smithed Heraldic armors. It is made of 1 Griffene Blood, 1 Rain Water, and 2 Essences of Sunlight brewed in a brew barrel. Most cultural armors done in the Qeynos forge require this temper (Sea Tempers are needed for the Freeport forge)