noun (n)

• the quality possessed by something that is excessively expensive(noun.attribute)

  Synonym:
  luxury, sumptuosity, sumptuousness
  

  source: wordnet30
• excessive spending(noun.act)

  Synonym:
  extravagance, high life, highlife, prodigality
  

  source: wordnet30
• The quality or state of being lavish.(noun)

  source: webster1913