I want to use flat-rate shipping based on the dollar amount a customer purchased:


$1 to $10 $6.99
$10 to $20 $7.50
$20 to $50 $8.50
$50 to $100 $9.50
$100 to $149 $12.50
$150 + Free Shipping

How do I do it like this? I'm not sure how I can go about doing it