The "Junk Wax Era" is known for massive overproduction as the hobby boomed in popularity. Card companies printed millions of copies, leading to market saturation and diminishing the value of most standard cards. While most cards from this era are relatively inexpensive, specific inserts, rare error cards (like the 1990 Topps Frank Thomas "No Name" error in baseball), and high-grade rookie cards of superstars like Kobe Bryant can still hold value. This era included multiple brands like Topps, Hoops, Skybox, Fleer, and Upper Deck. As a collector interested in the 90s, you likely appreciate the wide variety and nostalgic aspects of this period.