{"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":"2026-10-09T03:09:21+00:00","price":"223.72","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H3B7ZLZW?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=a49819cf4142f1888109243f4968277b_PBSEP_!!!affid!!!_118045_&aa_creativeid=d532B2VQ8PvE_ag7f0wYp1aSG2xnDHy7pnuLpIIe8fwybf0o_c"}],"product":{"brand":"Ultrahuman UK","evidence_url":"https://mainbuyer.com/evidence/products/ultrahuman-ring-air-smart-ring-track-sleep-hrv-stress-no-subscription-b0h3b7zlzw/prices","gtin":null,"id":17336,"model_number":null,"name":"ULTRAHUMAN Ring AIR Smart Ring -Track Sleep, HRV & Stress, No subscription","product_url":"https://mainbuyer.com/product/ultrahuman-ring-air-smart-ring-track-sleep-hrv-stress-no-subscription-b0h3b7zlzw","urn":"MB-AWIN-GB-B0H3B7ZLZW"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"223.72","historical_low":"223.72","last_observed_at":"2026-10-09T03:09:21+00:00","low_30d":"223.72","low_90d":"223.72","median_price":"223.72","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-09T03:09:21+00:00"}}