{"item_id":13175,"name":"Halloween mask set","url":"https://runescapetrader.com/item/13175","unit":"GP","buy_limit":5,"prices":{"instant_buy":{"gp":28351,"observed_at":"2026-09-11T20:49:35Z","age_seconds":3547,"status":"stale"},"instant_sell":{"gp":21777,"observed_at":"2026-09-11T19:29:51Z","age_seconds":8331,"status":"stale"}},"market_data_updated_at":"2026-09-11T21:48:11Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}