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.
(..) The future mode of transportation for this weary Western world. Now, I'm not going to make a lot of extravagant claims. Sure, it'll change your whole life for the better, but that's all. What the hell do you think you're doing? (..)1969 Butch Cassidy and the Sundance Kid