{"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":"2026-10-23T03:10:45+00:00","price":"339.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GQSZ6KGT?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_25ed7456a1d0&aa_adgroupid=cbd8dfd98284825d321403b9de8c14cf_PBSEP_!!!affid!!!_118045_&aa_creativeid=eef25QL_aFZsMffl_ay3nFXpXb1smsEge5oN_a_as8EA6RhdPd4_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://www.mainbuyer.com/evidence/products/flexispot-ergox-pro-ergonomic-office-chair-chip-certified-12-level-adjustable-height-5d-lumbar-support-7d-armrests-4d-headrest-supports-up-b0gqsz6kgt/prices","gtin":null,"id":19863,"model_number":null,"name":"FLEXISPOT ErgoX Pro Ergonomic Office Chair \u00e2?? CHIP Certified, 12-Level Adjustable Height & 5D Lumbar Support, 7D Armrests & 4D Headrest, Supports Up","product_url":"https://www.mainbuyer.com/product/flexispot-ergox-pro-ergonomic-office-chair-chip-certified-12-level-adjustable-height-5d-lumbar-support-7d-armrests-4d-headrest-supports-up-b0gqsz6kgt","urn":"MB-AWIN-GB-B0GQSZ6KGT"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"339.00","historical_low":"339.00","last_observed_at":"2026-10-23T03:10:45+00:00","low_30d":"339.00","low_90d":"339.00","median_price":"339.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:45+00:00"}}