{"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":"2026-10-21T03:10:03+00:00","price":"138.68","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0C27YBY4P?maas=maas_adg_api_589335864481531507_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB5863fbda61f70d67c326a43701a450ef_d73b9d4ab8b1&aa_adgroupid=744995d9431520f6806ff90508829324_PBSEP_!!!affid!!!_118045_&aa_creativeid=4ca7z_aEVmUuBf5YxPZOP5ILYU71uuLJcpcOLcBi1ze8RQok_c"}],"product":{"brand":"Inofia UK","evidence_url":"https://mainbuyer.com/evidence/products/inofia-small-double-mattresses-memory-foam-sprung-4ft-10-3-inch-hybrid-b0c27yby4p/prices","gtin":null,"id":19060,"model_number":null,"name":"Inofia Small Double Mattresses Memory Foam Sprung 4FT, 10.3 Inch Hybrid","product_url":"https://mainbuyer.com/product/inofia-small-double-mattresses-memory-foam-sprung-4ft-10-3-inch-hybrid-b0c27yby4p","urn":"MB-AWIN-GB-B0C27YBY4P"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"138.68","historical_low":"138.68","last_observed_at":"2026-10-21T03:10:03+00:00","low_30d":"138.68","low_90d":"138.68","median_price":"138.68","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-21T03:10:03+00:00"}}