Pricing can be used in various types of contracts to require the buyer to pay the supplier a predetermined amount per unit of service.

Unit pricing

Explanation:

Unit pricing can be defined by a method in which commodities and services are priced in terms of weight, sizes and value.

Unit pricing is basically the payment for a commodity or services based on per unit purchase.

It can also be a method in which a good or service is sold in fixed units at a price. Unit pricing includes price charged per labour, price charged per unit of raw materials or equipment used in production process. It could also be price charged per unit of household items.

fractionally backed paper money

fiat money

paper money

metallic money

answer; rapid growth in buyer demand and high buyer switching cost;