The 737-MAX800 is something like $10M more than a A321-NEO, when the A321-NEO meant retraining your pilots and the 737 didn't, that $10M difference closed a lot

The 737-MAX800 is something like $10M more than a A321-NEO, when the A321-NEO meant retraining your pilots and the 737 didn't, that $10M difference closed a lot, now both are going to require retraining.