What was the price of opium in international market in eighteenth century?

In the eighteenth century, the price of opium in the international market varied significantly based on factors such as region, quality, and demand. Generally, opium was a valuable commodity, especially in trade routes involving Asia and Europe, with prices fluctuating between a few hundred to over a thousand dollars per ton in today's currency. The British East India Company played a significant role in its trade, particularly in India and China, where demand was high. Overall, opium was a lucrative but controversial trade item during this period.