{"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":"2026-10-23T03:10:42+00:00","price":"389.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FSD62DGF?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_ab7a90e37ca5&aa_adgroupid=4d3bf04829d167cd7c48247cf4149b08_PBSEP_!!!affid!!!_118045_&aa_creativeid=97888q7UBDI6SL0nKoKd5y7Jz3olQEtS32LlQI3lajEPs_a4_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-ergox-pro-ergonomic-office-chair-chip-certified-12-level-adjustable-height-5d-lumbar-support-7d-armrests-4d-headrest-supports-u-b0fsd62dgf/prices","gtin":null,"id":19770,"model_number":null,"name":"FLEXISPOT ErgoX Pro Ergonomic Office Chair \u00e2?? CHIP Certified, 12\u00e2??Level Adjustable Height & 5D Lumbar Support, 7D Armrests & 4D Headrest, Supports U","product_url":"https://mainbuyer.com/product/flexispot-ergox-pro-ergonomic-office-chair-chip-certified-12-level-adjustable-height-5d-lumbar-support-7d-armrests-4d-headrest-supports-u-b0fsd62dgf","urn":"MB-AWIN-GB-B0FSD62DGF"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"389.99","historical_low":"389.99","last_observed_at":"2026-10-23T03:10:42+00:00","low_30d":"389.99","low_90d":"389.99","median_price":"389.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:42+00:00"}}