Sealed product from early OPTCG sets has historically appreciated as the player base grows
This list of cards should show why, even to someone who likes to cube with an extensive banned list of all the oppressively powerful cards, 1993 is still the biggest year for cube cards
They don't expire during the cleanup step or if you or Oko leave the game
And, early, it can chip in for a few damage
$0.99 Shared Roots Avatar: The Last Airbender $0.49 Glider Staff Avatar: The Last Airbender $0.79 Origin of Metalbending Avatar: The Last Airbender $0.49 Aang, the Last Airbender Avatar: The Last Airbender $0.49 Airbender's Reversal Avatar: The Last Airbender $0.49 Toph, the Blind Bandit Avatar: The Last Airbender $0.49 Earth Rumble Avatar: The Last Airbender $0.79 Jasmine Dragon Tea Shop (0390 - Extended Art) Avatar: The Last Airbender Variants $2.49 Katara, Water Tribe's Hope (0351 - Showcase) Avatar: The Last Airbender Variants $0.49 Suki, Kyoshi Warrior Avatar: The Last Airbender $0.49 White Lotus Reinforcements Avatar: The Last Airbender $0.49 Sokka, Lateral Strategist Avatar: The Last Airbender 0 results found
but Surveil not only gets more than that, it gets flavor in spades