Automatically apply discount codes

Tiered Batch Coupons. For example:

• Batch 1: Apply Coupon A automatically for the first 200 users.

• Batch 2: Once Batch 1 is exhausted, apply Coupon B automatically for the next 300 users.

• Final: Default to the base price once all batches are filled.

This "Scarcity-as-a-Service" logic would be perfect for 'Early Bird' launches. It would also be very helpful to receive alerts for coupons via webhook when a specific coupon is exhausted. That way we can trigger changes in our landing pages.