What are some of the rarest Garbage Pail Kids cards, and how can collectors identify them?
How has the value of Garbage Pail Kids memorabilia changed over the years, and what factors contribute to their current market prices?
What are some common ways to authenticate vintage Garbage Pail Kids items to ensure they are not counterfeit?
Besides trading cards, what other types of Garbage Pail Kids memorabilia are popular among collectors?
How have Garbage Pail Kids merchandise and promotions evolved since their introduction in the 1980s?