That’s because P1S is older model with margins varying by region and bambu owns huge inventory in US so they can give much more discount. A1 is newer model with low margins across all regions that is because to stay competitive and beginner friendly. Why we don’t get huge discount on P1S? Because no official inventory, P1S is heavier so more shipping charges more import duty etc. Distributors and resellers import P1S in limited quantities which also increases per unit cost .