Most GPU cloud comparisons stop at dollars-per-GPU-hour, which is only half the bill. Pricing one identical inference workload (1 GPU, 24/7, 30 TB/month egress) across six clouds from their published rates shows egress quietly eating 22–31% of an AWS, Azure, or GCP bill, a line item that's $0 on providers that don't meter it. The real lesson: egress is an architecture decision, not a billing surprise, so model it before you commit.