{"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":"56.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B09NRD38KX?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_f0af8e5a0ef0&aa_adgroupid=c318f8bef9198b6b093fe6717b9bda4f_PBSEP_!!!affid!!!_118045_&aa_creativeid=ebed0Ht8XCWDetEC1CEaXXCNHqGPVi4rHgEUJEO1wjpj_bRc_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://www.mainbuyer.com/evidence/products/fosi-audio-m04-subwoofer-amplifier-for-home-theater-mono-channel-digital-class-d-integrated-power-amp-for-passive-speakers-subwoofer-rated-100w-max-b09nrd38kx/prices","gtin":null,"id":22476,"model_number":null,"name":"Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX","product_url":"https://www.mainbuyer.com/product/fosi-audio-m04-subwoofer-amplifier-for-home-theater-mono-channel-digital-class-d-integrated-power-amp-for-passive-speakers-subwoofer-rated-100w-max-b09nrd38kx","urn":"MB-AWIN-GB-B09NRD38KX"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"56.00","historical_low":"56.00","last_observed_at":"2026-11-11T04:11:08+00:00","low_30d":"56.00","low_90d":"56.00","median_price":"56.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:08+00:00"}}