While it is not uncommon for the precise source of chest wall pain to remain unknown, some possible causes of costochondritis include: 1  Injury or trauma: Pain within the area of the chest wall may emerge as the result of a direct blow or injury to the area. Arthritis: Some evidence has suggested that symptoms of costochondritis are associated with degenerative joint conditions, such as osteoarthritis or rheumatoid arthritis.
In retail, unit price is the price for a single unit of measure of a product sold in more or less than the single unit. The unit price tells you the cost per pound, quart, or other unit of weight or volume of a food package. It is usually posted on the shelf below the food.
Average price per unit and prices per statistical unit are needed by marketers who sell the same product in different packages, sizes, forms, or configurations at a variety of different prices.he unit price tells you the cost per pound, quart, or other unit of weight or volume of a food package. It is usually posted on the shelf below the food.