A standard Pokmon card measures: 2.5 inches by 3.5 inches (63mm x 88mm) These measurements are recognized worldwide and work with nearly all standard trading card accessories
At the end of the day, the original Primeape is the much better option
Some sellers will provide certificates of authenticity or offer graded cards to guarantee the condition and value of the card
This is why its best to only go with trusted marketplaces, such as TCGPlayer and some verified subreddits, for your ungraded cards
While these cards act like Continuous Spell Cards while in a Pendulum Zone, these cards are actually Monster Cards, not Spell Cards, though, while in the Pendulum, they are subject to cards and effects that interact with Spell Cards, like Harpies Feather Duster or Vanquish Soul Pantera