Pull rates describe how often certain rarities or specific cards appear in sealed product (e.g. booster packs). In modern Pokémon TCG sets, a typical pack might guarantee one rare or better, with a chance at a holo, full art, or secret rare.
Rates vary by set and product. Booster boxes (36 packs) often have rough expectations for the number of ultra rares or secret rares per box, which influences both opening strategy and secondary market prices. Community-driven pull data and official odds (where disclosed) help collectors decide whether to open packs or buy singles.
Understanding pull rates can make the difference between chasing a card through packs versus buying it outright on the secondary market.