I shall book the room now, and then I need to look at flights so as not to become extortionate.
I've looked up the word "extortionate" in the dictionary but still, the underlined part doesn't make sense to me!
The sentence isn't written correctly. It is written as if the speaker might become extortionate, whereas clearly what is meant is that the (price of the) flights might become extortionate.
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The sentence isn't written correctly. It is written as if the speaker might become extortionate, whereas clearly what is meant is that the (price of the) flights might become extortionate.