{"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":"2026-09-17T12:27:45+00:00","price":"11.88","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FS655X7L?maas=maas_adg_api_584538503507687357_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBcfe6cdca35bea7104e3de61e1b0cf89d&aa_adgroupid=030142de6081a8d89c6bf14e1c3ac9a4_PBSEP_!!!affid!!!_118045_&aa_creativeid=fec6oRGUUFYNTSej28ZZNZFIXU0HNMAindwsMoWyg2hX6SU_c"}],"product":{"brand":"X-SENSE UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/x-sense-mini-smoke-alarm-for-home-10-year-sealed-battery-xs01-1-pack-b0fs655x7l/prices","gtin":null,"id":8084,"model_number":null,"name":"X-Sense Mini Smoke Alarm for Home, 10-Year Sealed Battery, XS01, 1-Pack","product_url":"https://mail.mainbuyer.com/product/x-sense-mini-smoke-alarm-for-home-10-year-sealed-battery-xs01-1-pack-b0fs655x7l","urn":"MB-AWIN-GB-B0FS655X7L"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"11.88","historical_low":"11.88","last_observed_at":"2026-09-17T12:27:45+00:00","low_30d":"11.88","low_90d":"11.88","median_price":"11.88","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:45+00:00"}}