You should find out which platform is used as the reference in your area (Star City Games, Card Kingdom , and TCG Player are the most common) and use it to check prices when listing a card for sale or when someone asks you its value at a tournament
So why are we talking about Roaming ThroneRoaming Throne, then
The Colourless type in the Pokmon TCG includes Normal, Flying and Dragon Pokmon seen in the video games, although more recent Dragon cards - from 2012s Dragons Exalted expansion onwards - have been classified as their own separate type of Pokmon card
But now an Alpha Black Lotus has apparently been sold, per the Certified Guaranty Company (CGC), for 3 million dollars
Also good against specific cards like Tizerus Charger, Timeless Witness, Master of Death or Piru, the Volatile, and many others