Charizard's Base Set 2 card sells for a decent price even if the card happens not to be graded
And finally If your opponent relies on Black Lotus to cast their spells, well...Black Lotus itself is a 0 mana spell, so this will counter it, and then your opponent will never even get mana
The combination of coloured Mana used to pay to cast a Commander card dictates what colour of cards can be included in a Commander deck
Even just the royal purple binder they had offers something different from what you generally see the big brands use for premium binders: black, white, teal, yellow
How can you not be romantic about Thraben Inspector
Its still quite restrictive, but for a whole host of decks, it works out to cost close to just the initial UU