The local SmartShopper posted some deals that start at Walgreens tomorrow. One I saw was American seed packets (flowers and veggies) 5 packs for a dollar! I know they're not Burpee seeds, but for that price, you can't pass them up.
EDIT - forgot, there is a limit of 10, so take the kids w/ you if you want/need more! And you have to use the in-ad coupon.