{"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":"75.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B07BQC7GNL?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_1d7b06620903&aa_adgroupid=b3fb0119a1a4bedebcc927f4d16ecc0b_PBSEP_!!!affid!!!_118045_&aa_creativeid=c48bp2uOcvBgeY_baTYRIiLl0nPBj9ahh7hUuZVcGn7Nf60M_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2-channel-amp-class-d-with-tpa3116-chips-100w-x-2-and-bass-treble-controls-for-home-audio-outdoor-passive-desktop-b-b07bqc7gnl/prices","gtin":null,"id":22461,"model_number":null,"name":"Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf S","product_url":"https://mail.mainbuyer.com/product/fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2-channel-amp-class-d-with-tpa3116-chips-100w-x-2-and-bass-treble-controls-for-home-audio-outdoor-passive-desktop-b-b07bqc7gnl","urn":"MB-AWIN-GB-B07BQC7GNL"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"75.00","historical_low":"75.00","last_observed_at":"2026-11-11T04:11:08+00:00","low_30d":"75.00","low_90d":"75.00","median_price":"75.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-11T04:11:08+00:00"}}