Price will often alternatively refer to the amount of payment requested with a owner of goods or services rather than the eventual payment amount. The wanted amount is often called price tag or selling price, while actual payment can be called the deal price or trade price like the bid price or buying price is the number of payment made available from a buyer of goods or services, although this interpretation is more prevalent is advantage or financial marketplaces. (en. wikipedia. org/wiki/price) According to the economists the purchase price can be defined as ratio between your levels of goods that are exchanged from the other person transactions. Example: - exchange of apples for 2 packages of bread or exchange of goods with the assistance is called price.