You can create a detailed listing for your Pokmon cards, including pictures, descriptions, and asking prices
Yes, play boosters could have The List cards
From lowest to highest, here is how many Pack Points each card costs based on rarity: 1 Diamond - 35 2 Diamond - 70 3 Diamond - 150 4 Diamond - 400 1 Star - 500 2 Star - 1,250 3 Star - 1,500 Crown - 2,500 Keep in mind that you can only hold a total of 2,500 Pack Points at a time
These small steps are what separate casual sellers from smart ones and help you avoid the pitfalls many beginner collectors encounter when they first start selling
Sully, Mike Wazowski, and of course Boo from Pixar's Monsters Inc
Cubone can be obtained from Genetic Apex: Mewtwo pack in the Genetic Apex set