A priceless treasure is a metaphor for a treasure with high value that cannot be calculated at market price.
From Tang Yu Xuan Ji's poem "Giving a Daughter Next Door": "It is hard to find a priceless treasure."
My beaded coat is about 100 mile long. ◎ Master Wang Yuan's Li Chuntang is 20% off.
Synonyms are priceless.
The antonym dung is inferior to soil and worthless.
Grammar is formal; Become an object; Include praise