Business card holder pull-out patent, magnetic durable extra

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DMFLY Business Card Holder Case - PU Leather Business Card Case Name Card Holder Slim Metal Pocket Card Holder with Magnetic Shut, Black : Office Products

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Business card holder with pull-out patent, durable style grey

Source One LLC Clear Outdoor Magnetic Business Card Holder (GAB-MAG) : Business Card Holders : Office Products

Pelican Magnetic Wallet for iPhone [Card Holder] Heavy Duty Snap-on MagSafe Wallet - Detachable Hard Shell Magnetic Phone Wallet - for iPhone 15 Pro Max/ 15 Pro/ 15/ 14 Pro Max/

ExtreLife For Magsafe Wallet, Strong Magnetic Wallet for iPhone 15/14/13/12 Series, Magnetic Card Holder Wallet for iPhone Wallet Magsafe with 2 Card Slots, Vegan Leather, Hold 7 Cards, Slim, Black

DMFLY Business Card Holder Case - PU Leather Business Card Case Name Card Holder Slim Metal Pocket Card Holder with Magnetic Shut, Black : Office Products

According to SolemnYugioh, these card holders can cause damage long-term. I was wondering if anybody here has experienced this happening to their cards and what alternatives there are for storing sealed cards.

Samsill Sterling Professional Business Card Holder - Office Depot