{"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":"2026-11-10T04:11:45+00:00","price":"21.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0HCW1ZPGP?maas=maas_adg_api_585950276735858928_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB0b7d158507b4be3056acf43088a42429_1a33d1b9453d&aa_adgroupid=1f8419fdc535bb29955bd770ed8a96cf_PBSEP_!!!affid!!!_118045_&aa_creativeid=694bW_a_bbtmfWoae6OhQgXii5HEy8iekUrUWUSD8wrUWTWNA_c"}],"product":{"brand":"Warmpax UK","evidence_url":"https://mainbuyer.com/evidence/products/m20-hand-warmers-rechargeable-2-pack-magnetic-pocket-heater-b0hcw1zpgp/prices","gtin":null,"id":22363,"model_number":null,"name":"M20 Hand Warmers Rechargeable 2 Pack, Magnetic Pocket Heater","product_url":"https://mainbuyer.com/product/m20-hand-warmers-rechargeable-2-pack-magnetic-pocket-heater-b0hcw1zpgp","urn":"MB-AWIN-GB-B0HCW1ZPGP"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"21.99","historical_low":"21.99","last_observed_at":"2026-11-10T04:11:45+00:00","low_30d":"21.99","low_90d":"21.99","median_price":"21.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-10T04:11:45+00:00"}}