The manuscript is priceless not for its materials but for the marginal notes left by three generations of readers.
这部手稿的无价之处不在于其材质，而在于三代读者留下的旁注。
Which choice best defines “priceless”?
B — So valuable that it cannot be priced. “priceless” means so valuable that it cannot be priced.
Which word means “so valuable that it cannot be priced”?
A — priceless. “priceless” means so valuable that it cannot be priced.
priceless — so valuable that it cannot be priced. In Chinese: 无价的，非常珍贵的.
priceless is pronounced /ˈpraɪsləs/.
The manuscript is priceless not for its materials but for the marginal notes left by three generations of readers. (这部手稿的无价之处不在于其材质，而在于三代读者留下的旁注。)
invaluable, inestimable, irreplaceable — all close in meaning to priceless (so valuable that it cannot be priced).
worthless, cheap — each the opposite of priceless (so valuable that it cannot be priced).
Yes. priceless is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.