I looked it up. The last cheap-ish movie in the MCU was Shang-Chi, and even that had a $150 million budget. Considering how everyone pretty much agreed the lowlight of that movie was the pointless dragon fight, they probably could have shaved another $10 million off and actually improved it. Still, it does show that it's still possible to do an MCU movie with a somewhat more restrained budget which is still stuffed to the gills with CGI. In contrast, if The Marvels is really $270 million, it has a higher budget than any MCU film which wasn't an Avengers film. Obviously some of that comes down to inflation, but still, the way they're going, Kang Dynasty will have a $500 million budget.