Buying sports card suppliesisn’t exactly the most exciting way to spend your hobby budget. Nobody goes to a card show dreaming about coming home with500 penny sleevesand a case oftop loaders. But if you collect sports cards, Pokémon, Magic: The Gathering or virtually any other type of trading card, supplies are a necessary expense. The marketplace is loaded with inexpensive card supplies, including penny sleeves, top loaders, magnetic holders, binders, card boxes and even supplies for graded cards. But for collectors who know what to look for,there are some potentially excellent values.