I just signed up on the Ace Hardware site and got an email w/ a link for $10 off of my first order (of $55 or more). They have free shipping to store, so i bought a Herculiner bed liner kit (normally $75, which is the cheapest i've found anywhere) for $65 + tax. Came out to be under $70!
Not sure how long it takes to ship to the store, but to save $10, its worth waiting a few days.