“Then their father Israel said to them, ‘If it must be so, then do this: take some of the choice fruits of the land in your bags, and carry a present down to the man, a little balm and a little honey, gum, myrrh, pistachio nuts, and almonds.” Genesis 43:11 (ESV)
Coming to the last gift, we find myrrh. Myrrh, like frankincense, was an all-purpose spice. It is another agricultural product. Well, more like a silvicultural product since it comes from trees, but you get the point. It is not something valuable because it is rare. It is instead valuable because people liked it.
How do I know people liked it? (read more here)