What does 1 Kings 10:9 mean?

Then she gave the king four and a half tons of gold, a huge amount of spices, and precious stones. No one had ever brought so many spices to Israel as the queen of Sheba did that day. 1 Kings 10:9 - Modern Text Bible

(Her gifts are extravagant, showing her respect and gratitude. The spices are especially noteworthy—no one had ever brought so much before.)