The term refers to the statistical frequency at which specific cards, particularly those considered rare or highly desirable, appear within sealed product from a particular Pokmon Trading Card Game expansion. For instance, it quantifies how often a sought-after VMAX or Secret Rare card will be found in booster packs.
Understanding this frequency is crucial for collectors and players, enabling informed decisions regarding product acquisition and collection management. Knowledge of this statistical likelihood impacts purchasing strategies, trade valuations, and overall expectations when opening sealed products. Historically, information regarding these rates has been derived from community-driven data aggregation, given the absence of official disclosures by the Pokmon Company International.