AWS CLI unblended cost-check oneliner
aws ce get-cost-and-usage \--time-period Start=`date -u +'%Y-%m-01'`,End=`date -u +'%Y-%m-%d'` --granularity MONTHLY --metrics UnblendedCost | jq '.ResultsByTime[].Total.UnblendedCost.Amount'
"3.051866618"
This is usually in USD.