{"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":"17.98","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FH4RC5TB?maas=maas_adg_api_584538503507687357_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBcfe6cdca35bea7104e3de61e1b0cf89d&aa_adgroupid=74022aa708f1c1ce11372299831641d5_PBSEP_!!!affid!!!_118045_&aa_creativeid=8134i6hB9HGnwm_bgLQjygFUfnEPmaSb3Q_bOm2JJbWnJxrYI_c"}],"product":{"brand":"X-SENSE UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/x-sense-2-pack-smoke-alarm-for-home-10-year-battery-and-lifespan-xs0g-sn-b0fh4rc5tb/prices","gtin":null,"id":6241,"model_number":null,"name":"X-Sense 2 Pack Smoke Alarm for Home, 10-Year Battery and Lifespan, XS0G-SN","product_url":"https://mail.mainbuyer.com/product/x-sense-2-pack-smoke-alarm-for-home-10-year-battery-and-lifespan-xs0g-sn-b0fh4rc5tb","urn":"MB-AWIN-GB-B0FH4RC5TB"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"17.98","historical_low":"17.98","last_observed_at":"2026-09-17T12:26:40+00:00","low_30d":"17.98","low_90d":"17.98","median_price":"17.98","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:26:40+00:00"}}