What makes a toy story figure collectible?

The only details found in the sources concern the characters and creators of the Toy Story franchise. The Wikipedia entry describes Sheriff Woody as a pull-string cowboy doll voiced by Tom Hanks, and notes the designers and directors behind the character. No description of collectible attributes such as rarity, production runs, or market value is present. Consequently, the evidence does not provide a basis for explaining factors that contribute to a Toy Story figure’s collectibility. Without additional data, it cannot be determined from these sources what makes a Toy Story figure collectible.