What if you put $139 a year of Amazon Prime into Amazon stock instead?
10 years of Amazon Prime cost $1,258. The same money in Amazon stock, bought each month, is worth $2,947 today (2.3x). Amazon Prime and the other what if I had invested questions are on one page, each with what the money is worth today.

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US annual fee, spread over 12 monthly buys.
Price only, split-adjusted. Hindsight, not advice.
Price history built 27 Sep 2026.
Sources: en.wikipedia.org