Why does this volume of ink

need this much packaging?

This is a HP 564 Colour  Ink Value Pack (which HP promotes as "avoiding wastage") and a HP 564 Black Ink Value Pack, which contains the same ink as one HP 564XL cartridge but in three cartridges with three times the packaging plus a large bubble pack. The Value Pack with three cartridges is $45; the single high capacity cartridge is $52.