Selling cards one by one works when the individual value is high, but for bulk stacks, the trade-off is speed versus per-card margin
One more was in Commander Legends: Battle for Baldurs Gate , and the bulk appeared in The Lord of the Rings: Tales of Middle-earth
Pokmon TCG collectors were willing to shell out $80 for early copies of the Secret Rare Rainbow Dragonite VSTAR, although the Full Art card has since been selling on average for $35, showing a not-insignificant decline in value
The Undermountain Adventurer can help you ramp, especially after you complete a dungeon where it adds six green mana to your mana pool
You don't need to keep all of your draw cards in your opening hand, but try to have a strategy for obtaining extra cards built into your opening
An entire floor dedicated to Japanese vintage Pokmon cards, another one for the new sets, as well as a huge case full of collectables