How the Calculator Works

This tool estimates the future value of your Yu-Gi-Oh! collection using a simple but powerful concept called compound growth. Think of it like a snowball rolling downhill – it gets bigger and bigger as it picks up more snow (or in this case, value and new investments).

Here’s a simplified look at the main factors:

• Starting Value: Your collection’s current worth.
• Annual Investment: Any new money you plan to spend on cards each year.
• Growth Rate: The average percentage your collection is expected to increase in value each year (we provide a default based on market trends, but you can adjust it).
• Investment Horizon: How many years you plan to hold and grow your collection.
• Reinvest Annual Growth: This is key! It’s the portion of your collection’s *annual growth* that you use to buy even more cards. This makes your collection grow faster, similar to how interest on savings can earn more interest.

Each year, the calculator takes your current collection value, adds any new annual investment, considers the portion of its growth you reinvest, and then applies the annual growth rate to this new, larger total. This process repeats year after year, showing you the compounding effect on your collection’s value over time.