Good coupon deal at Advance Auto Parts
 

Order online and do in-store pickup OR if you get it over $75, you'll get free shipping.

Advance Auto Parts has $10 off $30 OR $20 off $50 coupons (code ES123). You can re-use them if you clear your cookies and then either pay with PayPal or create a new account using a different email address. I have purchased a ton of stuff in the past week keeping everything just over $50 and utilizing cheap and practical filler items if I'm close to the $50 mark. Its a forty-percent discount that is hard to pass!

They had a $30 off $75 coupon (BIG30) but I don't know if that one still works.

If you are close to $30 or $50 but not over, use a small filler item. I've been purchasing 16oz cans of Valvoline Brake Cleaner for $2.50/can. In fact, I ordered a case of twelve on one of my purchases (12 cans at $2.50/each is $30. Subtract $10 with coupon and with my state tax it comes to $1.77 per can!)