It mostly depends on how much you borrow. Typically you would be required to make monthly repayments of at least the greater of 3% of your loan balance or $15. If you make an upfront cash withdrawal equivalent to your maximum credit limit, e.g. $30,000, a 3% minimum monthly repayment in the first month would be $900, declining to about $880 in the second month (depending on the interest rate) and continuing to diminish each month if you make no further withdrawals.
Alternatively, if you make varying withdrawals and repayments each month, depending on your needs, your minimum repayment amount will increase or decrease along with the balance outstanding. For example, you might withdraw $5,000 in the first month, in which case a 3% minimum repayment amount would be $150. If you withdrew a further $2,000 in the second month, your total outstanding balance might be about $6,900 (depending on the interest rate) and a 3% minimum repayment would amount to around $207. In the third month you might choose to repay $1,000, reducing your minimum repayment (depending on the interest rate) in the fourth month to around $175.