Shipping starts around $9, or spend $75 or more (after coupon) to qualify for free shipping. (Free in-store pickup is also available on most items.) Sales tax is added where applicable. Note that motor oil is excluded. The coupons (which do not stack):

•20% off sitewide no minimum via code "P20"
•$10 off orders of $30 or more via code "A123"
•$15 off orders of $40 or more via code "BIG15"
•$20 off orders of $50 or more via code "A123"
•$30 off orders of $75 or more via code "BIG30"
•$50 off orders of $150 or more via code "VISA"

Hope this helps some people save money. I just saved $50 on motor mounts.

*Thanks to Dealnews.com for this info.