What does 'Priceless' mean?

[Lotinmaxceau]

English Language Tests, Intermediate level

ESL/EFL Test #149 "Financial and bank expressions", question 8

When a fire broke out at the Louvre, at least twenty ......... paintings were destroyed, including two by Henri Matisse.

(a) worthless
(b) priceless
(c) valueless
(d) useless

English Language Tests, Intermediate level

ESL/EFL Test #149 "Financial and bank expressions", answer 8

When a fire broke out at the Louvre, at least twenty priceless paintings were destroyed, including two by Henri Matisse.

Correct answer: (b) priceless
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I 'd use useless in that situation

[Alan]

Hi,

'Priceless' means very expensive - too expensive to buy.

Alan
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English as a Second Language
You can read my ESL story Present Simple

[Saneta]

pleasae tell me the difference between: worthless and valueless?

many thanks