{"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":"2026-10-23T03:10:34+00:00","price":"219.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GF7XYDG7?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_8801765d4684&aa_adgroupid=90ec69e64273a7a775c5497a8ebf2e19_PBSEP_!!!affid!!!_118045_&aa_creativeid=1ea9CoPcuYcXrYuLpFqz6FiZsBu57kBsjzqFrcWDIqgndmQ_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-ergox-ergonomic-office-chair-executive-mesh-desk-chair-with-height-adjustable-seat-headrest-armrests-independent-lumbar-support-swivel-b0gf7xydg7/prices","gtin":null,"id":19622,"model_number":null,"name":"FLEXISPOT ErgoX Ergonomic Office Chair, Executive Mesh Desk Chair with Height Adjustable Seat, Headrest, Armrests & Independent Lumbar Support, Swivel","product_url":"https://mainbuyer.com/product/flexispot-ergox-ergonomic-office-chair-executive-mesh-desk-chair-with-height-adjustable-seat-headrest-armrests-independent-lumbar-support-swivel-b0gf7xydg7","urn":"MB-AWIN-GB-B0GF7XYDG7"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"219.99","historical_low":"219.99","last_observed_at":"2026-10-23T03:10:34+00:00","low_30d":"219.99","low_90d":"219.99","median_price":"219.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:34+00:00"}}