Expected profit per kill calculation

this page shows how the value in the Expected profit per kill section in the Infobox monster template is calculated. This value is calculated under certain assumption: With these assumptions in place, The final value is calculated as (GE Price of each item)*(Probability of getting the item as a drop)*(Quantity of the item dropped). If the item has a range of quantities for which it can be dropped, then we get the average amongst that range and use that as the figure for quantity. When the final value is calculated, we round it to the closest integer and we get the final value. This value is a good estimate for how much money a player makes by killing the monster once, and it can be used to compare different monsters to see which is more profitable.
 * An always drop will drop 1 in every kill
 * A common drop will drop 1 in 10 kills
 * An uncommon drops will drop 1 in 30 kills
 * A rare drop will drop 1 in 250 kills
 * A very rare drop will drop 1 in 5,000 kills
 * An extremely rare drop will drop 1 in 50,000 kills
 * Drops which are untradeable are ignored in the calculation
 * Items which do not have an Exchange: page are ignored
 * Items with a Rarity=unknown are ignored