Grequests почему не находит все ключи?

import grequests
import json
import fake_useragent
urls=[]
try:
    for url in range(176288495,176288500):
        urls.append(f"https://steamcommunity.com/market/itemordershistogram?country=RU&language=russian&currency=5&item_nameid={url}&two_factor=0")
    responce=[grequests.get(u, headers={'user-agent' : fake_useragent.UserAgent().random}) for u in urls]
    maps=grequests.map(responce)
    print(maps)
    for count in maps: #
        js=json.loads(count.text)
        print(js)
        for key in js.keys():
            print(key)
            if key == 'buy_order_graph':
                order_price = float(js.get(key)[0][0])
            if key == 'sell_order_summary':
                quantily = int(str(re.findall("\d+", js.get(key))[0]).replace("{'", '').replace("'}", ''))
            if key == 'sell_order_graph':
                normal_price = float(js.get(key)[0][0])
        print(f'{order_price} -- {normal_price} -- {quantily} ')
except Exception:
    pass
finally:
    pass

    for count in maps: #
        js=json.loads(count.text)
        order_price = quantily = normal_price = None
        if 'buy_order_graph' in js:
            order_price = js.get('buy_order_graph')[0][0]
        if 'sell_order_summary' in js:
            quantily = int(str(re.findall("\d+", js.get('sell_order_summary'))[0]).replace("{'", '').replace("'}", ''))
        if 'sell_order_graph' in js:
            normal_price = float(js.get('sell_order_graph')[0][0])
        print(f'{order_price if order_price else None} -- {normal_price if normal_price else None} -- {quantily if quantily else None} ')

import re

print(f'{order_price} -- {normal_price} -- {quantily} ')