The big cards to look out for in Pokémon TCG: Surging Sparks are valuable alternative artwork cards.

The rare Pikachu card isn't the only one that could now be worth a fortune. Research by CSGOLuck suggests Charizard cards top the value charts, with certain versions fetching as much as £5,300.

So, whether you’ve kept your cards pristine or they're a bit “well-loved,” it’s worth investigating. Here’s what you need to know about the Pikachu ‘Illustrator’ card, the value of ...