Prime Algorithm Logic

The Prime subscription layer isn't just a marketing tool; it's a sophisticated logic gate. It operates on a 'Net-Zero Margin' script that calculates real-time fare reductions by cross-referencing member subsidies against live carrier feeds.

From an engineering perspective, the Prime logic must execute within 200ms of the initial search result to ensure the 'Member-Only' price is injected seamlessly. This guide explores the back-end middleware responsible for this calculation, focusing on how it handles multi-currency normalization and tax-inclusive pricing strings across diverse European markets.