hey what it means...!??

It cost me an arm and a leg to take my trip to Australia.

It cost me a lot to take my trip to Australia.  or

My trip to Australia was very expensive.

Hey, what does this means...!??

It cost me an arm and a leg to take my trip to Australia.

<em>It cost me an arm and a leg</em> means it was very expensive. Probably too expensive, and so you'll feel poor for a while. It felt like losing an arm, as well as a leg!