{
  "observed_at": "2026-09-12",
  "guide_path": "/guides/vpn-australia-buying-guide",
  "formula": "cafe_pass = personal_vpn AND documented_ios AND documented_windows AND ios_kill_switch_yes AND windows_kill_switch_yes AND inspected_full_report AND native_aud_plan; unknown cannot satisfy; announcement_only is not inspected; office_pass = business_remote_access AND private_resource_access_yes; consumer VPN is not private-resource access",
  "cash_formula": "cash12_cents = introductory_billed_total_cents; covered_months = term_months + bonus_months; teaser12_cents = effective_monthly_equivalent_cents * 12",
  "residency_formula": "australian_exit_advertised_yes is not data_residency_au",
  "hand_arithmetic": [
    {
      "plan": "surfshark Starter 2-year",
      "effective_monthly_cents": 349,
      "teaser12_cents": 4188,
      "intro_cents": 9423,
      "covered_months": 27,
      "equal": false,
      "note": "349*12=4188 ≠ 9423"
    },
    {
      "plan": "proton-vpn VPN Plus 2-year",
      "effective_monthly_cents": 559,
      "teaser12_cents": 6708,
      "intro_cents": 13416,
      "covered_months": 24,
      "equal": false,
      "note": "559*12=6708 ≠ 13416"
    },
    {
      "plan": "private-internet-access 3 Years + 3 Months EXTRA",
      "effective_monthly_cents": 249,
      "teaser12_cents": 2988,
      "intro_cents": 9711,
      "covered_months": 39,
      "equal": false,
      "note": "249*12=2988 ≠ 9711"
    }
  ],
  "assumptions": [
    "Unknown cannot satisfy a hard requirement.",
    "Announcement-only audits are not inspected reports.",
    "Missing platforms object is unknown, not unsupported.",
    "Native AUD means a stored subscription native_currency of AUD, not an FX equivalent.",
    "12-month cash is the intro billed total. Effective monthly × 12 is not cash.",
    "Surfshark One is excluded (dual public intro).",
    "An advertised Australian exit is not data residency.",
    "A consumer VPN is not private-resource access.",
    "Listed amounts are not Australian checkout totals (GST and card FX fees omitted).",
    "Not a ranking and not a numeric security score."
  ]
}