{"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":"2026-11-15T04:11:39+00:00","price":"299.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FNQNWG1D?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_85fabc840301&aa_adgroupid=39341b954f427a1a106c22621cdaeb14_PBSEP_!!!affid!!!_118045_&aa_creativeid=f071oTt34sldpfLuRigCImXVDJS_bEnfImkxUJbpzTXaA2A8_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://mainbuyer.com/evidence/products/fosi-audio-sw10-10-powered-500w-subwoofer-with-built-in-amp-active-amplified-compact-10-inch-subwoofer-for-home-theater-audio-lfe-rca-inputs-outputs-b0fnqnwg1d/prices","gtin":null,"id":22992,"model_number":null,"name":"Fosi Audio SW10 10\" Powered 500W Subwoofer with Built-in Amp, Active Amplified Compact 10 inch Subwoofer for Home Theater Audio, LFE & RCA Inputs/Outputs","product_url":"https://mainbuyer.com/product/fosi-audio-sw10-10-powered-500w-subwoofer-with-built-in-amp-active-amplified-compact-10-inch-subwoofer-for-home-theater-audio-lfe-rca-inputs-outputs-b0fnqnwg1d","urn":"MB-AWIN-GB-B0FNQNWG1D"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"299.00","historical_low":"299.00","last_observed_at":"2026-11-15T04:11:39+00:00","low_30d":"299.00","low_90d":"299.00","median_price":"299.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-15T04:11:39+00:00"}}