It didn't always used to be this way, as you may remember, and in fact you may still find yourself doing some mental math. Like what if the two liter says it costs $.75 per liter and the pop is $.04 per ounce? Ah yes, metric conversion. Don't forget 34 ounces per liter. Yeah, I had to look it up too.
The nice thing about all this is that it makes it easier to spot "Value Pack Ripoff." That's what I'm calling it when the value pack is actually more expensive per each than the smaller size. I don't doubt many an unsuspecting shopper has been ripped off by this. Makes you wonder about shopping at Costco, eh?
I was at an unnamed grocery store the other day shopping for some cotton swabs, and comparing prices like a good shopper, when I found the perfect example of this phenomenon. For both q-tips and Johnson and Johnson, value pack was a worse deal than the regular smaller pack. Granted your got a "free" package of band-aids with a dispenser in the q-tip value pack, but it isn't really free now is it?
I'm not here to bash the cotton swab companies; I see this all over the place. I just want you to beware. So, beware of the value pack ripoff!
Still had to do some mental math on the q-tips, but it's not too hard to divide by 100.