High costs of traditional banking are a significant burden for many Africans, making it difficult for them to access and utilize financial services. Some examples of these high costs include:

1. _High transaction fees_: Charges for transactions, such as withdrawals, transfers, and payments, can be as high as 10-15% of the transaction amount.

2. _Maintenance fees_: Monthly or annual fees for maintaining a bank account can be costly, especially for low-income individuals.

3. _Interest rates_: High interest rates on loans and credit cards can make borrowing expensive and unsustainable.

4. _Foreign exchange fees_: Fees for converting currency can be high, especially for international transactions.

5. _ATM fees_: Withdrawing cash from ATMs can incur additional fees, especially when using machines from other banks.

6. _Minimum balance requirements_: Some accounts require minimum balances to avoid fees, which can be challenging for those with limited funds.

7. _Overdraft fees_: Fees for overdrafts can be high, punishing those who accidentally overspend.

8. _Transfer fees_: Fees for transferring money between accounts or to other banks can be costly.

These high costs can lead to:

1. _Financial exclusion_: Many people opt out of traditional banking due to these high costs, exacerbating financial exclusion.

2. _Informal financial systems_: People turn to informal financial systems, such as savings clubs and loan sharks, which can be risky and expensive.

3. _Limited financial inclusion_: High costs hinder efforts to increase financial inclusion and provide access to financial services for all.

Cryptocurrencies and mobile financial services offer a more affordable and inclusive alternative, with lower transaction fees, no maintenance fees, and greater financial control.