{"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":"2026-10-21T03:10:04+00:00","price":"161.49","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FY675VPX?maas=maas_adg_api_589335864481531507_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB5863fbda61f70d67c326a43701a450ef_59386d657730&aa_adgroupid=9c0a3e384a357479c7b904d0d05b0482_PBSEP_!!!affid!!!_118045_&aa_creativeid=6456Ap4Ze4fDmWYTk3wl2WoXQdpBnxXRI15kYpuwllUUwpk_c"}],"product":{"brand":"Inofia UK","evidence_url":"https://mainbuyer.com/evidence/products/inofia-memory-foam-mattress-topper-super-king-3-inch-gel-topper-with-cover-b0fy675vpx/prices","gtin":null,"id":19071,"model_number":null,"name":"Inofia Memory Foam Mattress Topper Super King, 3 Inch Gel Topper with Cover","product_url":"https://mainbuyer.com/product/inofia-memory-foam-mattress-topper-super-king-3-inch-gel-topper-with-cover-b0fy675vpx","urn":"MB-AWIN-GB-B0FY675VPX"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"161.49","historical_low":"161.49","last_observed_at":"2026-10-21T03:10:04+00:00","low_30d":"161.49","low_90d":"161.49","median_price":"161.49","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-21T03:10:04+00:00"}}