Bryan -- I went to the Walmart on 462 tonight, and they're out of packers. I found one of the meat guys and he said they've been out for a few days; he thought some would come in today, but no dice.
I made a detour on the way home and checked out the Mechanicsburg store -- all they had was enhanced flats. Yuck!
One final point -- I called Humphrey's and Reading is still the closest. My Dad went up and cleaned out F.M. Browns of 40 lb bags for the season. They still have 20s if you need any.
Erik