Originally Posted by cadetdrivr

It seems UAL is the primary customer for the 737 MAX 9 and 10.

Meanwhile, the 321 NEO outsells the large MAXs 5-to-1. (Sales of the 320 NEO and the MAX 8 are far more similar.)

Since these sorts of decisions are made by CFOs I'm gonna assume that economics are indeed the primary driver. Which begs the question: was UAL given an insanely awesome sweetheart deal on these large MAXs or are we simply the outlier? Or both? Or something else?