why are pokemon cards dropping in price

why are pokemon cards dropping in price Card just shot up 2X price. Can someone explain this is going up? I been waiting for it to drop like Sunzard and Bubble Mew so I can buy Price Trends: Pokémon Cards Dropping

Name: why are pokemon cards dropping in price Card just shot up 2X price. Can someone explain this is going up? I been waiting for it to drop like Sunzard and Bubble Mew so I can buy Price Trends: Pokémon Cards Dropping
Brand: assemblyhouseclassical.co.uk
SKU: 17400873712
Price: 25.67 USD
Availability: InStock
Rating: 4.7236 (17 reviews)

SKU: 17400873712

4.7

USD25.67 USD52.67

Pay in 4 interest-free payments of $6.42 Learn more

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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

Description

One Piece TCG: Double Pack Set Vol

Any "As this card enters the battlefield," "This card enters the battlefield with," and "When this card enters the battlefield" abilities of the chosen card will work