It can mine both Hellstone and Obsidian, unlike the Gold Pickaxe. However, it's incapable of mining Cobalt Ore, Mythril Ore and Adamantite Ore. The Nightmare Pickaxe is one of the first items that a player will obtain that is both melee and gives off particles.
September 19, 2011. A unit price is a currency value assigned to a single unit of measure. For example, a unit price can be applied to a mutual fund's basket of securities. A mutual fund's unit price is the price per fund share; each share represents a unit of ownership in the fund's basket of securities. A stock or share price represents a public company's market valuation per share; each share represents a unit of company ownership.
Unit Price of Items. The unit price of an item is the cost for each unit. The unit price may be calculated for several reasons. It will allow an easy comparison of the cost of the same quantity of items that come in different sizes. It may be used to find the cost of a single item when many items are purchased together.