{"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":"2026-10-23T03:10:47+00:00","price":"349.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H6JJWRJJ?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_e555d4030b25&aa_adgroupid=2098598c373e5b5f8ebd8f3e0476a0aa_PBSEP_!!!affid!!!_118045_&aa_creativeid=7acb0pxdCDrvxpMKWEscoABOTwr9b1pMLABRDL0Zqz9Ctlc_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-balanso-ergonomic-office-chair-with-footrest-dynamic-balance-mechanism-3d-armrests-adaptive-lumbar-support-zero-formaldehyde-seat-cushio-b0h6jjwrjj/prices","gtin":null,"id":19924,"model_number":null,"name":"FLEXISPOT Balanso Ergonomic Office Chair with Footrest, Dynamic Balance Mechanism, 3D Armrests, Adaptive Lumbar Support, Zero-Formaldehyde Seat Cushio","product_url":"https://mainbuyer.com/product/flexispot-balanso-ergonomic-office-chair-with-footrest-dynamic-balance-mechanism-3d-armrests-adaptive-lumbar-support-zero-formaldehyde-seat-cushio-b0h6jjwrjj","urn":"MB-AWIN-GB-B0H6JJWRJJ"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"349.99","historical_low":"349.99","last_observed_at":"2026-10-23T03:10:47+00:00","low_30d":"349.99","low_90d":"349.99","median_price":"349.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:47+00:00"}}