{"id": 31543, "title": "Nutubeヘッドフォンアンプ（基板のみ）--販売終了", "brand": "スイッチサイエンス", "mpn": "4582555875204", "sku": "3087", "category": null, "price": 1303.0, "currency": "JPY", "price_usd": 8.3691, "availability": "out_of_stock", "seller": {"id": "swi", "name": "Switch Science", "domain": "www.switch-science.com", "country": "JP"}, "seller_url": "https://www.switch-science.com/products/3087", "page": "https://roboticmarket.aigap.com/p/31543.html", "first_seen": "2026-08-05 06:48:28.443892+00:00", "last_seen": "2026-08-05 06:48:28.443892+00:00", "image": "https://roboticmarket.aigap.com/media/img/swi/83/83cdb7d4e91b46f0d983028f1661d6ad.jpg", "price_history": [{"at": "2026-08-05 06:48:28.443892+00:00", "price": 1303.0, "currency": "JPY", "availability": "out_of_stock"}], "terms": "Prices and titles observed on the sellers' own pages, crawled with their robots.txt obeyed. Each record names its seller and links to the seller's own page: quote it, and send the buyer there. Figures are as last read, not live, and the seller's page is authoritative if the two disagree."}