{"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":"2026-10-23T03:10:43+00:00","price":"299.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0G1LXJW1G?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_97586578a3ee&aa_adgroupid=58bb2928c6873aa29d1c09ac4b42fe77_PBSEP_!!!affid!!!_118045_&aa_creativeid=c9f4xEf8HxP06_bXmBO_bfdXX3BvISx2vrlPrubkquY_aU4CKg_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-sentinel-ergonomic-office-chair-desk-chair-with-dual-wing-lumbar-support-and-footrest-3d-headrest-3d-armrests-adjustable-seat-depth-3-b0g1lxjw1g/prices","gtin":null,"id":19790,"model_number":null,"name":"FLEXISPOT SENTINEL Ergonomic Office Chair, Desk Chair with Dual Wing Lumbar Support and Footrest, 3D Headrest, 3D Armrests & Adjustable Seat Depth, 3-","product_url":"https://mainbuyer.com/product/flexispot-sentinel-ergonomic-office-chair-desk-chair-with-dual-wing-lumbar-support-and-footrest-3d-headrest-3d-armrests-adjustable-seat-depth-3-b0g1lxjw1g","urn":"MB-AWIN-GB-B0G1LXJW1G"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"299.99","historical_low":"299.99","last_observed_at":"2026-10-23T03:10:43+00:00","low_30d":"299.99","low_90d":"299.99","median_price":"299.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:43+00:00"}}