Is real rubber expensive?

In the realm of commodity markets, the question of whether real rubber is expensive often depends on a variety of factors. Could you elaborate on the current market conditions? Are we referring to natural rubber, synthetic rubber, or both? How do supply and demand trends impact the price? Are there any international trade policies or tariffs that could be affecting the cost? Additionally, how does the price of real rubber compare to alternative materials or substitutes? Answering these questions could provide a more comprehensive understanding of whether real rubber is indeed considered expensive.