Cost next to your other telemetry
Graph Lineman spend and savings on the same Grafana Cloud or Datadog board as the rest of your engineering telemetry. Lineman publishes the series as lineman.spend and lineman.savings. Grafana Cloud rewrites those names on ingest, so build dashboards there against lineman_spend_USD_total and lineman_savings_USD_total. Cost stops being a separate report someone has to remember to open.