"at free of cost" vs "at no cost"

[Naveen Duggal]

English Idioms and Expressions, Elementary Level

ESL/EFL Test #4 "For Good", question 3

They're very generous in that museum -- not only is the entrance fee reasonable but they give you a brochure for free.

(a) at no cost
(b) at little cost
(c) at some cost
(d) at low cost

English Idioms and Expressions, Elementary Level

ESL/EFL Test #4 "For Good", answer 3

They're very generous in that museum -- not only is the entrance fee reasonable but they give you a brochure at no cost.

Correct answer: (a) at no cost
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Since they have got entry voucher in concession rate but also they can enjoy rides (or any thing else) at free of cost.

Naveen Duggal

[Alan]

Hi,

The standard expression suggesting that the entrance fee is free is 'at no cost' or you could say 'free of charge'. 'Free of cost' is not a standard expression.

Alan
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English as a Second Language
You can read my ESL story Everything in the Garden is lovely