{"item_id":10999,"name":"Goblin book","url":"https://runescapetrader.com/item/10999","unit":"GP","buy_limit":15,"prices":{"instant_buy":{"gp":501,"observed_at":"2026-09-11T21:19:20Z","age_seconds":719,"status":"fresh"},"instant_sell":{"gp":500,"observed_at":"2026-09-11T21:15:49Z","age_seconds":930,"status":"stale"}},"market_data_updated_at":"2026-09-11T21:31:11Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}