{"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":"2026-09-17T12:26:40+00:00","price":"21.59","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0F21D8NSD?maas=maas_adg_api_584538503507687357_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBcfe6cdca35bea7104e3de61e1b0cf89d&aa_adgroupid=c91fa3b9c4bf4f276cbfdf0284152292_PBSEP_!!!affid!!!_118045_&aa_creativeid=be23U1dDuHf8fT_aSIADyBsT_bOGfR_bFFdetTetmd6Z8xEj6E_c"}],"product":{"brand":"X-SENSE UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/x-sense-smoke-alarm-10-year-sealed-battery-magnetic-mount-sd11-2-pack-b0f21d8nsd/prices","gtin":null,"id":6261,"model_number":null,"name":"X-Sense Smoke Alarm, 10-Year Sealed Battery, Magnetic Mount, SD11, 2 Pack","product_url":"https://mail.mainbuyer.com/product/x-sense-smoke-alarm-10-year-sealed-battery-magnetic-mount-sd11-2-pack-b0f21d8nsd","urn":"MB-AWIN-GB-B0F21D8NSD"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"21.59","historical_low":"21.59","last_observed_at":"2026-09-17T12:26:40+00:00","low_30d":"21.59","low_90d":"21.59","median_price":"21.59","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:26:40+00:00"}}