{"id": 33440, "title": "Gravity - 心拍センサ（ECG）", "brand": "DFRobot", "mpn": "4582555880543", "sku": "4025", "category": null, "price": 3751.0, "currency": "JPY", "price_usd": 24.0924, "availability": "in_stock", "seller": {"id": "swi", "name": "Switch Science", "domain": "www.switch-science.com", "country": "JP"}, "seller_url": "https://www.switch-science.com/products/4025", "page": "https://roboticmarket.aigap.com/p/33440.html", "first_seen": "2026-08-05 09:57:13.182536+00:00", "last_seen": "2026-08-05 09:57:13.182536+00:00", "image": "https://roboticmarket.aigap.com/media/img/swi/45/45c409617c9969e9f163fb4f6c6e115e.jpg", "price_history": [{"at": "2026-08-05 09:57:13.182536+00:00", "price": 3751.0, "currency": "JPY", "availability": "in_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."}