How much is a rhino horn worth today?

Excuse me, could you please shed some light on the current valuation of a rhino horn? I'm particularly interested in understanding the factors that contribute to its worth, whether it's driven by demand from traditional medicine markets, poaching for illegal trade, or any other underlying reasons. Additionally, I'm curious to know if there have been any notable fluctuations in its price over recent years, and if there are any efforts underway to reduce the demand for rhino horns and protect these endangered species. Thank you for your insights.