[Solved] It is important to search the area around a hanging body for sex toys, pornography, and erectile dysfunction drugs. Mark-up: Mark-up refers to the difference between the cost of a good or service and its selling price, expressed as a percentage over the cost. Cost: Represents the amount of money required to purchase something or the expense associated with creating a product or service. Sale Price: The final price at which an item or service is sold, after any discounts or adjustments are applied. Operating Expenses: Costs associated with a business’s operations, including rent, utilities, payroll, and materials, but excluding the cost of goods sold.