an arm and a leg vs loadsamoney

an arm and a leg

noun
  • Usually used after the verb cost, but also often charge, pay, and spend: a very high price for an item or service; an exorbitant price 

loadsamoney

noun
  • A vulgar person who has gained a large amount of wealth and flaunts it whenever possible. 

intj
  • A colourful variation of the phrase "loads of money", referring to the free flowing of money, to large amounts spent or earned, or to the perceived acquisitiveness and materialism engendered in society by a booming economy. 

How often have the words an arm and a leg and loadsamoney occurred in a corpus of books? (source: Google Ngram Viewer )