{"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":"94.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GL7BQ9WZ?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_0cd519a5c9ab&aa_adgroupid=1df7006e72c900393c37f74323cec7a3_PBSEP_!!!affid!!!_118045_&aa_creativeid=617aBQktFPyavOSIk1NcW2B2ZB2wDbMZPJ8s9nt0tu_awE68_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://www.mainbuyer.com/evidence/products/fosi-audio-im4-open-back-iem-earphones-in-ear-monitor-wired-earbuds-10mm-single-dynamic-driver-iems-for-audiophiles-gaming-and-studio-3-5mm-2-pin-0-78mm-detachable-cables-n52-b0gl7bq9wz/prices","gtin":null,"id":22521,"model_number":null,"name":"Fosi Audio IM4 Open-Back IEM Earphones, In Ear Monitor Wired Earbuds, 10mm Single Dynamic Driver, IEMs for Audiophiles, Gaming and Studio, 3.5mm 2-Pin 0.78mm Detachable Cables, N52 Dual Magn","product_url":"https://www.mainbuyer.com/product/fosi-audio-im4-open-back-iem-earphones-in-ear-monitor-wired-earbuds-10mm-single-dynamic-driver-iems-for-audiophiles-gaming-and-studio-3-5mm-2-pin-0-78mm-detachable-cables-n52-b0gl7bq9wz","urn":"MB-AWIN-GB-B0GL7BQ9WZ"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"94.00","historical_low":"94.00","last_observed_at":"2026-11-11T04:11:10+00:00","low_30d":"94.00","low_90d":"94.00","median_price":"94.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:10+00:00"}}