what does the idiom in this text suggest? cell phones once cost an arm and a leg, but today the majority of…

what does the idiom in this text suggest? cell phones once cost an arm and a leg, but today the majority of people can afford them. cell phones were once very expensive. cell phones were once popular items to trade.
Answer
Brief Explanations:
The idiom "cost an arm and a leg" means something is very expensive. In the given text, it describes the past - high cost of cell phones.
Answer:
Cell phones were once very expensive.