The FGM-148 Javelin? $80,000 (missile); $125,000 (reusable
Command Launch Unit) back in 2002. Do not know current prices- have
not bought any lately.
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Assuming you mean the FGM-148 Javelin man-portable anti-tank
missile of the United States, the maximum effective range is about
2500m (2.5km or 1.5 miles)
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The FGM-148 Javelin anti-tank missile was first manufactured by
the United States to replace the Dragon anti-tank missile in 1996.
It was designed in 1989 and is still in production today at eighty
thousand dollars US per missile.