{"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":"2026-11-11T04:11:08+00:00","price":"65.55","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B07VDQQY95?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_dc428f8ae07e&aa_adgroupid=ba9131d9d302d50dc666bc9bb26ed2a4_PBSEP_!!!affid!!!_118045_&aa_creativeid=5b5cI4qgZYvi74SUomVaZTRRrbxz5tTRRM8HE64qsFalgDs_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/fosi-audio-q4-headphone-amplifier-dac-converter-mini-stereo-digital-to-analog-dac-amp-usb-coaxial-optical-to-3-5mm-aux-rca-jack-for-computer-desktop-powered-active-speakers-up-t-b07vdqqy95/prices","gtin":null,"id":22469,"model_number":null,"name":"Fosi Audio Q4 Headphone Amplifier DAC Converter, Mini Stereo Digital-to-Analog DAC Amp, USB Coaxial Optical to 3.5MM AUX RCA Jack, for Computer Desktop Powered Active Speakers Up to 24 bit/1","product_url":"https://mail.mainbuyer.com/product/fosi-audio-q4-headphone-amplifier-dac-converter-mini-stereo-digital-to-analog-dac-amp-usb-coaxial-optical-to-3-5mm-aux-rca-jack-for-computer-desktop-powered-active-speakers-up-t-b07vdqqy95","urn":"MB-AWIN-GB-B07VDQQY95"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"65.55","historical_low":"65.55","last_observed_at":"2026-11-11T04:11:08+00:00","low_30d":"65.55","low_90d":"65.55","median_price":"65.55","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:08+00:00"}}