{"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":"149.98","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0F2HJLNLQ?maas=maas_adg_api_589335864481531507_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB5863fbda61f70d67c326a43701a450ef_59386d657730&aa_adgroupid=ea06990b02de24933cde7e5e3734f90b_PBSEP_!!!affid!!!_118045_&aa_creativeid=ec7cPS2hTDhZlDP7_aaADYE1FpR_aBWK8Z4M9zwTpmYv4xNHM_c"}],"product":{"brand":"Inofia UK","evidence_url":"https://mainbuyer.com/evidence/products/inofia-memory-foam-mattress-topper-king-4-inch-gel-bed-topper-with-cover-b0f2hjlnlq/prices","gtin":null,"id":19069,"model_number":null,"name":"Inofia Memory Foam Mattress Topper King, 4 Inch Gel bed Topper with Cover","product_url":"https://mainbuyer.com/product/inofia-memory-foam-mattress-topper-king-4-inch-gel-bed-topper-with-cover-b0f2hjlnlq","urn":"MB-AWIN-GB-B0F2HJLNLQ"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"149.98","historical_low":"149.98","last_observed_at":"2026-10-21T03:10:03+00:00","low_30d":"149.98","low_90d":"149.98","median_price":"149.98","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-21T03:10:03+00:00"}}