{"item_id":21804,"name":"Ancient crystal","url":"https://runescapetrader.com/item/21804","unit":"GP","buy_limit":250,"prices":{"instant_buy":{"gp":155495,"observed_at":"2026-09-11T22:48:46Z","age_seconds":436,"status":"fresh"},"instant_sell":{"gp":149003,"observed_at":"2026-09-11T22:54:53Z","age_seconds":69,"status":"fresh"}},"market_data_updated_at":"2026-09-11T22:55:11Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}