Plastic starter deck boxes are purposely made so they are good for card storage and good for the environemnt.
They contain two "deck wells" where you can put sleeved or unsleeved cards. In addition, the outer sleeve is replaceable so you can customize it. Players will generally keep these boxes and not throw them out. At minimum, they are good things to give to new players.
This is MUCH better for the environment than a laminated cardboard box that gets tossed into the garbage.
Take Care,
Jeff
Jeff Donais
Director, Game Development Group
Upper Deck Entertainment
70 Undead Warlock
61 Tauren Shaman
29 Blood Elf Paladin
29 Blood Elf Rogue
19 Undead Rogue
19 Human Mage