{"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":"2026-11-11T04:11:10+00:00","price":"709.20","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GCC7NVWC?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_29f7764b3c27&aa_adgroupid=4eeb758387e327bd3dfbe70a9dab36b8_PBSEP_!!!affid!!!_118045_&aa_creativeid=5449bLJlJGI539F2u6CucNjcigb0IvyfkfBp6pjFMbeBnzo_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/fosi-audio-k7-desktop-usb-c-dac-headphone-amp-i5-open-back-planar-magnetic-headphones-b0gcc7nvwc/prices","gtin":null,"id":22529,"model_number":null,"name":"Fosi Audio K7 Desktop USB-C DAC Headphone Amp + i5 Open-Back Planar Magnetic Headphones","product_url":"https://mail.mainbuyer.com/product/fosi-audio-k7-desktop-usb-c-dac-headphone-amp-i5-open-back-planar-magnetic-headphones-b0gcc7nvwc","urn":"MB-AWIN-GB-B0GCC7NVWC"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"709.20","historical_low":"709.20","last_observed_at":"2026-11-11T04:11:10+00:00","low_30d":"709.20","low_90d":"709.20","median_price":"709.20","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:10+00:00"}}