{"dataset":"MainBuyer UK price observations","market":"GB","market_name":"United Kingdom","methodology":"Each observation is stored only when MainBuyer has a timestamped checked retailer offer. Missing days are not interpolated or invented. Historical low, high and median figures use recorded in-stock observations only.","observations":[{"currency":"GBP","in_stock":true,"observed_at":"2026-10-03T19:12:22+00:00","price":"280.89","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CJV5M1GT?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=e82adc5ddd166594527e755a46c676d4_PBSEP_!!!affid!!!_118045_&aa_creativeid=e50a8bU9Ysqsyxu6P_aFUO16Ht4BEVcTmGA0pqhsbqZv_aE18_c"}],"product":{"brand":"Ultrahuman UK","evidence_url":"https://www.mainbuyer.com/evidence/products/ultrahuman-ring-air-smart-ring-track-sleep-hrv-stress-no-subscription-b0cjv5m1gt/prices","gtin":null,"id":16481,"model_number":null,"name":"ULTRAHUMAN Ring AIR Smart Ring -Track Sleep, HRV & Stress, No subscription","product_url":"https://www.mainbuyer.com/product/ultrahuman-ring-air-smart-ring-track-sleep-hrv-stress-no-subscription-b0cjv5m1gt","urn":"MB-AWIN-GB-B0CJV5M1GT"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"280.89","historical_low":"280.89","last_observed_at":"2026-10-03T19:12:22+00:00","low_30d":"280.89","low_90d":"280.89","median_price":"280.89","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-03T19:12:22+00:00"}}