Sometimes, it's just a plastic bag. Otherwise, it's usually a clear plastic carton holding 10 that has some paper insert with the seller. This is Japan.

Edit: ah, this time it's a plastic bag so there's no really order/arrangement within the package which I think is what you were asking. I normally just take them out from whichever side is closer when in the fridge (summer) though when it's cooler in the house I try to keep the package balanced in weight since I might be picking it up.