GET /restaurants/_search
{
  "size": 0,
  "query": {
    "range": {
      "votes": {
        "gte": 100
      }
    }
  },
  "aggs": {
    "city_term": {
      "terms": {
        "field": "city.keyword",
        "size": 10000,
        "shard_size": 10000,
        "min_doc_count": 10,
        "order": { "_count": "desc" }
      },
      "aggs": {
        "avg_price": {
          "avg": {
            "field": "averageCostForTwo"
          }
        },
        "avg_price_bucket_sort": {
          "bucket_sort": {
            "sort": [
              { "avg_price": { "order": "desc" } } 
            ],
            "size": 7                              
          }
        }
      }
    }
  }
}