On my income, I can't afford to be 'extravagant'. [=I can't afford to buy expensive things that I don't need]
The company has been making 'extravagant' claims/promises about the drug's effectiveness.
He went to 'extravagant' [='elaborate, extreme'] lengths to impress his boss.
(..) Now, I've traveled across half our state to be here and to see about this land. Now, I daresay some of you might have heard some of the more extravagant rumors about what my plans are, so I just thought you'd like to hear it from me. This is the face. It's no great mystery. (..)2007 There Will Be Blood