system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel Cinematic Universe] Before becoming a sorcerer, how rich was Stephen Strange? Especially compared to guys like Tony Stark?
gpt
He was pretty wealthy, his "real world" penthouse is worth about $13.5 million and he drives a $235k Lamborghini. Not that it would be much different in the MCU, any kind of penthouse in the middle of Manhattan would cost that much. If we assume that only around half of his wealth is tied to the apartment, $20 million net worth would be reasonable.

Nowhere close to Stark, but wealthy enough. 

Comparatively, Stark's Malibu mansion is valued at around $117 million and he has a fleet of supercars that make Strange's Lambo look cute by comparison.