curl --request GET \
  --url https://api.sonderplan.com/v2/billable-item \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": 92834,
      "name": "Aspera Upload",
      "description": "Upload to Aspera (per TB)",
      "unit_name": "Terabyte",
      "buy_cost": "10.00",
      "sell_cost": "20.00",
      "taxes": [
        {
          "id": 3247,
          "name": "GST",
          "rate": "10.00",
          "total": "151.00"
        }
      ],
      "custom_fields": [
        {
          "id": 7823,
          "name": "Type",
          "value": "Video Editing",
          "value_id": 8973,
          "update_key": "2_1_7823"
        }
      ],
      "currency": "AUD",
      "created_id": 3,
      "created": 1388552400,
      "updated_id": 3,
      "updated": 1388552400
    }
  ],
  "meta": {
    "pagination": {
      "total": 1,
      "count": 1,
      "per_page": 1,
      "current_page": 1
    }
  }
}