Des Volstgalph Here, once again, only 20 copies of this card are known to exist and it also has ties to the 2005 Pharaoh Tour (which took place in five countries)
Similarly, the Gengar Holo #057, known for its spooky vibe and powerful abilities, sold for as much as $55 for a PSA 10
How to use eBay for pricing: Search for the card, click "Sold Items" filter, sort by most recent, and look at the last 5-10 sales for a card in comparable condition
That sent the cards price spiking
Great Encounters (2008) Great Encounters continues the LV.X theme with powerhouses like Garchomp and Palkia , but its best remembered for Swampert and the versatile Claydol , one of the strongest draw engines of its time
It could also be notable that the card type is "Artifact", as this was before they started dividing artifacts into Mono, Poly and Continous (Chaos Orb is of course printed as Mono Artifact)