The price tag on a luxury item is only the beginning of its true cost. The full cost includes the premium above a functional alternative, the opportunity cost of that premium invested over time, its proportional impact on your net worth and financial freedom timeline, and the resale or appreciation value that partially offsets it. The Luxury Purchase Impact Calculator computes all four dimensions and returns a scored verdict (0–100) on whether the purchase is financially justified given your specific income, net worth, and expected enjoyment. Consider a $9,000 watch when a reliable $250 watch serves the same function. The premium is $8,750. At 7% annual return, that premium grows to $17,200 in 10 years and $33,400 in 20 years. If your net worth is $45,000, this single purchase represents 19% of your current wealth in one transaction. If your current monthly savings is $900, the premium represents nearly 10 months of savings — and delays your financial independence by approximately 320 days. None of this means the purchase is wrong. A watch rated 9/10 on happiness with strong resale value, purchased at 5% of annual income with 5% of net worth at risk, may be entirely justified. The calculator gives you the numbers to make that determination explicitly rather than relying on the feeling that you can afford it because the monthly payment is manageable.