{"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":"379.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H6PH185K?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_25ed7456a1d0&aa_adgroupid=cbb21d3331c1048235718ba427dcf53d_PBSEP_!!!affid!!!_118045_&aa_creativeid=7af8nds_audbVBXiyDk34hDhmzW2BcFg4UJ2EOYHGNZftERU_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mainbuyer.com/evidence/products/flexispot-ergox-pro-ergonomic-chair-chip-certified-heavy-duty-mesh-desk-chair-5d-lumbar-7d-armrests-4d-headrest-height-adjustable-supports-250kg-b0h6ph185k/prices","gtin":null,"id":19868,"model_number":null,"name":"FLEXISPOT ErgoX Pro Ergonomic Chair, CHIP Certified Heavy Duty Mesh Desk Chair, 5D Lumbar, 7D Armrests, 4D Headrest, Height Adjustable, Supports 250kg","product_url":"https://mainbuyer.com/product/flexispot-ergox-pro-ergonomic-chair-chip-certified-heavy-duty-mesh-desk-chair-5d-lumbar-7d-armrests-4d-headrest-height-adjustable-supports-250kg-b0h6ph185k","urn":"MB-AWIN-GB-B0H6PH185K"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"379.99","historical_low":"379.99","last_observed_at":"2026-10-23T03:10:45+00:00","low_30d":"379.99","low_90d":"379.99","median_price":"379.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:45+00:00"}}