Originally Posted by redkimba

The real reason is that each manufacturer has its own interests. They aren't the same entity. Hot dog manufacturers prefer to have packages weigh exactly a pound. It's easier to measure, sell, store, etc. Thus there are packages with 6 or even 4 larger, but the weight should add up to a pound, regardless. It happens to be that the most manageable size of hot dogs are an eighth of a pound, or 2 ounces.
(from wikianswers.com)

I just figure "they" sell it that way for those of us who buy them for family reunions. Eventually you will even out the numbers. :P