I only wish i would have found out about this earlier. Currently porting my SAAS to BT after building 1.0 by hand. BT just does so much stuff out of the box that will take you weeks/months to sort out otherwise - Stripe subscriptions, users, teams, password reset, great scaffolding, etc etc etc.
Cannot recommend this highly enough to anyone building a SaaS business.
I've said before and will say again: coding with BulletTrain is like painting.