{"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":"26.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B08XZL91VT?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_9d75315e9a0c&aa_adgroupid=bda12cfff782fd5a269c5cf43b367905_PBSEP_!!!affid!!!_118045_&aa_creativeid=3888LWKRtxuH1_aogMDd5H9utS8uG94qLmKoELMgQDdNLRtc_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://www.mainbuyer.com/evidence/products/fosi-audio-ph04-4-channel-headphone-amp-portable-headphones-amplifier-splitter-4-way-for-music-studio-mixer-audio-sharing-podcast-monitor-supports-15-150-ohms-with-12v-power-ada-b08xzl91vt/prices","gtin":null,"id":22474,"model_number":null,"name":"Fosi Audio PH04 4 Channel Headphone Amp, Portable Headphones Amplifier Splitter 4 Way for Music Studio, Mixer Audio Sharing Podcast Monitor, Supports 15-150 Ohms with 12V Power Adapter","product_url":"https://www.mainbuyer.com/product/fosi-audio-ph04-4-channel-headphone-amp-portable-headphones-amplifier-splitter-4-way-for-music-studio-mixer-audio-sharing-podcast-monitor-supports-15-150-ohms-with-12v-power-ada-b08xzl91vt","urn":"MB-AWIN-GB-B08XZL91VT"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"26.00","historical_low":"26.00","last_observed_at":"2026-11-11T04:11:08+00:00","low_30d":"26.00","low_90d":"26.00","median_price":"26.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:08+00:00"}}