{"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":"2026-09-20T08:49:15+00:00","price":"329.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0D8HYRS46?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=f8b7be66c65c16e6307c000400e053ec_PBSEP_!!!affid!!!_118045_&aa_creativeid=5de2wVVfzhbENFDPLeVMQALSD6n3dmpqdSgXMmVXyimEVYs_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-19T08:17:50+00:00","price":"329.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0D8HYRS46?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=f8b7be66c65c16e6307c000400e053ec_PBSEP_!!!affid!!!_118045_&aa_creativeid=5de2wVVfzhbENFDPLeVMQALSD6n3dmpqdSgXMmVXyimEVYs_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-18T08:29:54+00:00","price":"329.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0D8HYRS46?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=f8b7be66c65c16e6307c000400e053ec_PBSEP_!!!affid!!!_118045_&aa_creativeid=5de2wVVfzhbENFDPLeVMQALSD6n3dmpqdSgXMmVXyimEVYs_c"},{"currency":"GBP","in_stock":true,"observed_at":"2026-09-17T12:29:41+00:00","price":"329.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0D8HYRS46?maas=maas_adg_api_587917621439044438_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB86d049c9b3545c5c7a1612d2992e400d&aa_adgroupid=f8b7be66c65c16e6307c000400e053ec_PBSEP_!!!affid!!!_118045_&aa_creativeid=5de2wVVfzhbENFDPLeVMQALSD6n3dmpqdSgXMmVXyimEVYs_c"}],"product":{"brand":"Ultrahuman","evidence_url":"https://www.mainbuyer.com/evidence/products/ultrahuman-ring-air-smart-ring-for-men-women-sleep-heart-rate-hrv-stress-tracker-fitness-tracker-no-app-subscription-20-workout-mode-b0d8hyrs46/prices","gtin":null,"id":11692,"model_number":null,"name":"ULTRAHUMAN Ring AIR \u00e2?? Smart Ring for Men & Women | Sleep, Heart Rate, HRV, Stress Tracker | Fitness Tracker | No App Subscription | 20+ Workout Mode","product_url":"https://www.mainbuyer.com/product/ultrahuman-ring-air-smart-ring-for-men-women-sleep-heart-rate-hrv-stress-tracker-fitness-tracker-no-app-subscription-20-workout-mode-b0d8hyrs46","urn":"MB-AWIN-GB-B0D8HYRS46"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"329.00","historical_low":"329.00","last_observed_at":"2026-09-20T08:49:15+00:00","low_30d":"329.00","low_90d":"329.00","median_price":"329.00","observation_count":4,"priced_observation_count":4,"retailer_count":1,"span_days":3,"tracked_since":"2026-09-17T12:29:41+00:00"}}