{"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":"2026-09-20T08:49:03+00:00","price":"315.48","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CLB6K74J?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=b855cca4c26957826c460478861dc8b6_PBSEP_!!!affid!!!_118045_&aa_creativeid=1a54IGZmVYcUYe43gIfbu1BMt7RS2AkxZzi5JJjqFKktJOM_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-19T08:17:32+00:00","price":"315.48","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CLB6K74J?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=b855cca4c26957826c460478861dc8b6_PBSEP_!!!affid!!!_118045_&aa_creativeid=1a54IGZmVYcUYe43gIfbu1BMt7RS2AkxZzi5JJjqFKktJOM_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-18T08:29:44+00:00","price":"315.48","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CLB6K74J?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=b855cca4c26957826c460478861dc8b6_PBSEP_!!!affid!!!_118045_&aa_creativeid=1a54IGZmVYcUYe43gIfbu1BMt7RS2AkxZzi5JJjqFKktJOM_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-17T12:29:02+00:00","price":"315.48","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CLB6K74J?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=b855cca4c26957826c460478861dc8b6_PBSEP_!!!affid!!!_118045_&aa_creativeid=1a54IGZmVYcUYe43gIfbu1BMt7RS2AkxZzi5JJjqFKktJOM_c"}],"product":{"brand":"Ultrahuman","evidence_url":"https://mainbuyer.com/evidence/products/ultrahuman-ring-air-smart-ring-track-sleep-hrv-stress-no-subscription-b0clb6k74j/prices","gtin":null,"id":10491,"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-b0clb6k74j","urn":"MB-AWIN-GB-B0CLB6K74J"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"315.48","historical_low":"315.48","last_observed_at":"2026-09-20T08:49:03+00:00","low_30d":"315.48","low_90d":"315.48","median_price":"315.48","observation_count":4,"priced_observation_count":4,"retailer_count":1,"span_days":3,"tracked_since":"2026-09-17T12:29:02+00:00"}}