{"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":"139.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GDXGRBK1?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_d60a6a5eb24b&aa_adgroupid=17948f45d7741473630b381fbef33fcf_PBSEP_!!!affid!!!_118045_&aa_creativeid=5294HWXltQcXoxwLC_bYIYNWo5U6a7tSctZQFNoljSL_bUDoI_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://www.mainbuyer.com/evidence/products/fosi-audio-ca30-4-channel-car-amplifier-mini-class-d-200x4-peak-400-watts-micro-compact-amp-mono-subwoofer-rca-high-level-input-320w-2-bridgeds-low-noise-hifi-for-vehicle-stere-b0gdxgrbk1/prices","gtin":null,"id":22531,"model_number":null,"name":"Fosi Audio CA30 4 Channel Car Amplifier Mini Class D 200x4 Peak 400 Watts, Micro Compact Amp Mono Subwoofer, RCA/High Level Input, 320W 2 Bridgeds, Low Noise HiFi for Vehicle Stereo Audio So","product_url":"https://www.mainbuyer.com/product/fosi-audio-ca30-4-channel-car-amplifier-mini-class-d-200x4-peak-400-watts-micro-compact-amp-mono-subwoofer-rca-high-level-input-320w-2-bridgeds-low-noise-hifi-for-vehicle-stere-b0gdxgrbk1","urn":"MB-AWIN-GB-B0GDXGRBK1"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"139.00","historical_low":"139.00","last_observed_at":"2026-11-11T04:11:10+00:00","low_30d":"139.00","low_90d":"139.00","median_price":"139.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:10+00:00"}}