Print a $1 coupon good on any Pierre Drive Thru Sandwich or Mini Pack from the Walmart.com site. The coupon specifically says, "Redeemable at Walmart" on it.
There is a sampling event 10/4-10/7 in select Walmarts. Go here to enter your zip code to see if a store near you is holding a sampling event. From the two that showed up on my search, it appears to be larger, Super Walmarts that are holding events in my area.
Does anyone have pricing on these? I couldn't find much and since they aren't available at the Walmart closest to me (Pierre's page says that they'll be in 900 Walmarts), I don't have access to pricing.