{"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":"299.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H5HXZ96Q?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_d37b0e72bd34&aa_adgroupid=056eb7d49f46369c7945db46cf7c8c23_PBSEP_!!!affid!!!_118045_&aa_creativeid=cd15_b4trWLPjO02DD9o8uBix5TP7ZoDbgbcURRpO7hiX9Fw_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-ergonomic-office-chair-big-and-tall-pu-leather-executive-swivel-chair-300kg-adjustable-high-back-computer-chair-adjustable-lumbar-support-b0h5hxz96q/prices","gtin":null,"id":19917,"model_number":null,"name":"FLEXISPOT Ergonomic Office Chair, Big and Tall PU Leather Executive Swivel Chair, 300KG Adjustable High Back Computer Chair, Adjustable Lumbar Support","product_url":"https://mainbuyer.com/product/flexispot-ergonomic-office-chair-big-and-tall-pu-leather-executive-swivel-chair-300kg-adjustable-high-back-computer-chair-adjustable-lumbar-support-b0h5hxz96q","urn":"MB-AWIN-GB-B0H5HXZ96Q"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"299.99","historical_low":"299.99","last_observed_at":"2026-10-23T03:10:47+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":"2026-10-23T03:10:47+00:00"}}