How much is an 8 cent Boston tea party bicentennial stamp worth?

The 8-cent Boston Tea Party bicentennial stamp, issued in 1973, is generally worth around 20 to 50 cents in used condition and slightly more for mint, unused condition. Its value can vary based on factors such as condition, demand, and market trends. For a precise valuation, it's best to consult a stamp catalog or a professional appraiser.