Walmart offers the Apache Mills Notre Dame 18" x 30" Graystone Door Mat for $8.43. Opt for in-store pickup to avoid the $5.99 shipping charge. That's $2 under our mention from last April and the lowest price we've seen. (it's the best deal now by $10.) It's made of heavy-duty recycled rubber.

Update: The price has increased to $8.46.