There tends to be mostly Common, less Uncommon and, usually, just one Rare card with up to three foil-treated cards in a modern booster pack

$79.99 Sephiroth, Fabled SOLDIER (0382 - Borderless) Final Fantasy Variants $109.99 Buster Sword (0351 - Borderless) Final Fantasy Variants $64.99 Cloud, Midgar Mercenary (0375 - Borderless) Final Fantasy Variants $37.99 Tifa, Martial Artist (0206 - Borderless) Final Fantasy Commander Decks Variants $34.99 Tidus, Yuna's Guardian (0205 - Borderless) Final Fantasy Commander Decks Variants $99.99 Sephiroth, Fabled SOLDIER (0317 - Borderless) Final Fantasy Variants $6.99 Joshua, Phoenix's Dominant (0397 - Borderless) Final Fantasy Variants $59.99 Yuna, Grand Summoner (0208 - Borderless) Final Fantasy Commander Decks Variants $64.99 Terra, Herald of Hope (0204 - Borderless) Final Fantasy Commander Decks Variants $42.99 Celes, Rune Knight (0201 - Borderless) Final Fantasy Commander Decks Variants $15.99 G'raha Tia, Scion Reborn (0203 - Borderless) Final Fantasy Commander Decks Variants $199.99 Y'shtola, Night's Blessed (0207 - Borderless) Final Fantasy Commander Decks Variants 0 results found

And while Kangaskhan ex itself may not hard sell this card, its rarity, familiarity, and creative design combine to propel this secret rare to the top of the list of most expensive Mega Evolution cards of them all
Similarly, there is only one traditional copy listed for less than $15 on TCGplayer
It can turn a larger artifact into a smaller one right away, or turn a smaller artifact into a more expensive one with a bit of a mana investment