how much is a barrel of oil Any transaction can be seen as a contract between the two parties. The so-called transaction cost can be seen as the cost of the transaction contract. According to Mr Coase and others, a type of transaction costs arise from the accidental factors that occur when a deal is signed. These incidental factors may not be written into the contract due to the fact that they could not be foreseen in advance, or although they could be foreseen, they could not be written into the contract due to too many factors. Another type of transaction costs is the signing of contracts and the cost of monitoring and enforcing contracts. (3) monetary benefits -- increase the monetary value of assets. There are both measurable and unquantifiable benefits in these three different forms of income. Among them: mental income is too strong to measure, monetary gain is easy to measure because of the static concept of value change. Economists, therefore, focus only on actual earnings. The Resolution Foundation said the loss of pay across all sectors took the average loss for each of the UK’s 800,000 agency workers to £500 a year, up from £430 last year. Keynes argued that savings and investment were two interdependent variables, not two independent variables. It is our responsibility to achieve our goals in the right way in 2018, and we have this opportunity.