Price, product, promotion and place (4Ps): costs

The idea

Costs are the amounts a business spends to produce and sell its goods or services, and they set the floor below which a price cannot normally be sustained in the long run. Fixed costs, such as rent and insurance, do not change with output, while variable costs, such as raw materials and packaging, rise as output increases. Total costs are fixed costs plus variable costs, and average cost is total cost divided by output. When pricing, a business must at least cover its costs to avoid a loss, and cost-plus pricing adds a percentage mark-up to the unit cost. As output grows, fixed costs are spread over more units, so average cost tends to fall, which can allow a lower price or a higher margin.

What earns the marks

• Defines costs as the amounts spent on producing and selling goods or services, distinguishing them from price and revenue.
• Classifies costs as fixed, which do not vary with output, and variable, which do vary with output, giving a relevant example of each.
• Calculates total cost as fixed costs plus variable costs, and average cost as total cost divided by output, using correct units.
• Explains that costs set a minimum price because a business must cover them to avoid making a loss in the long run.
• Links cost-plus pricing to unit cost, showing that a mark-up is added to the cost of producing one unit to set the selling price.
• Explains how growth and higher output spread fixed costs over more units, reducing average cost and widening pricing options.

Common mistakes and how to put them right

• Treating fixed costs as costs that never change at all.

  Put it right: They do not change with output, though they can change over time, for example a rent review.

• Adding a mark-up to total cost rather than unit cost when applying cost-plus pricing.

  Put it right: Divide total cost by output first, then add the percentage mark-up.

• Confusing cost with price.

  Put it right: State that cost is what the business pays and price is what the customer pays.

• Assuming lower average cost automatically means lower price.

  Put it right: Explain that the business may keep the price and take a higher margin instead.

Exam tips

• Show your working for cost calculations, including the formula used, so method marks can be awarded even if the final figure is wrong.
• Use the case figures rather than generic numbers, and keep units consistent, for example pounds per unit.
• When discussing pricing, state explicitly whether the proposed price covers cost and what that means for profit or loss.
• Link cost changes to the business context, for example explaining how bulk buying lowers variable cost per unit and affects the price floor.