{"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":"2026-11-15T04:11:40+00:00","price":"139.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H2YTSJLS?maas=maas_adg_api_584955703333686768_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBdd5e46c7ec568c9a30ee9a425b4054a9_8571c95c1ab3&aa_adgroupid=b8e00d313d99a0c39c1d3722e6690f3a_PBSEP_!!!affid!!!_118045_&aa_creativeid=b326QNSsuW_btO_b3A44TzUs5UoKSEMx_a_br765OIGXQYKBxN0_c"}],"product":{"brand":"Fosi Audio-UK","evidence_url":"https://mainbuyer.com/evidence/products/fosi-audio-md3-magnetic-dac-amp-dongle-portable-headphone-amplifier-with-1-28-display-es9039q2m-mini-amp-with-3-5-4-4mm-outputs-pcm-32bit-384khz-dsd256-hifi-amps-for-phone-b0h2ytsjls/prices","gtin":null,"id":22995,"model_number":null,"name":"Fosi Audio MD3 Magnetic DAC Amp Dongle, Portable Headphone Amplifier with 1.28\" Display, ES9039Q2M, Mini Amp with 3.5 & 4.4mm Outputs,PCM 32bit/384kHz, DSD256, HiFi Amps for Phone/Pad/PC (Bl","product_url":"https://mainbuyer.com/product/fosi-audio-md3-magnetic-dac-amp-dongle-portable-headphone-amplifier-with-1-28-display-es9039q2m-mini-amp-with-3-5-4-4mm-outputs-pcm-32bit-384khz-dsd256-hifi-amps-for-phone-b0h2ytsjls","urn":"MB-AWIN-GB-B0H2YTSJLS"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"139.00","historical_low":"139.00","last_observed_at":"2026-11-15T04:11:40+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":"2026-11-15T04:11:40+00:00"}}