{"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":"2026-10-27T04:10:58+00:00","price":"239.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0CP3SJSJP?maas=maas_adg_api_579922303372511158_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBf27fbbea59dcf1164504ec0631c65630_6f5e53747550&aa_adgroupid=beeed7c5c70d377a33bbfbb80c5d3da0_PBSEP_!!!affid!!!_118045_&aa_creativeid=205eJ2KZM4nPN_b9VRLCxMuUrts8HP5N6Qcr1JuNaCemIHWY_c"}],"product":{"brand":"Inofia UK","evidence_url":"https://mainbuyer.com/evidence/products/inofia-king-mattress-12-inch-memory-foam-sprung-mattress-5ft-airy-cooling-b0cp3sjsjp/prices","gtin":null,"id":20452,"model_number":null,"name":"Inofia King Mattress,12 Inch Memory Foam Sprung Mattress 5FT Airy Cooling","product_url":"https://mainbuyer.com/product/inofia-king-mattress-12-inch-memory-foam-sprung-mattress-5ft-airy-cooling-b0cp3sjsjp","urn":"MB-AWIN-GB-B0CP3SJSJP"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"239.99","historical_low":"239.99","last_observed_at":"2026-10-27T04:10:58+00:00","low_30d":"239.99","low_90d":"239.99","median_price":"239.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-27T04:10:58+00:00"}}