{"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":"2026-10-23T03:10:37+00:00","price":"314.49","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GFGZTFXF?maas=maas_adg_api_579967245749788136_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB91ff4ee529c02fe4ce2615b2925f50e7_c4463dd1b20d&aa_adgroupid=952c51d3af9a750bccd2bede13426f52_PBSEP_!!!affid!!!_118045_&aa_creativeid=632e4pgNQkJ0lQDYWR_atyuad84cFPcSghIX7_bATenZEiHCg_c"}],"product":{"brand":"FlexiSpot UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/flexispot-ergox-pro-ergonomic-office-chair-250kg-heavy-duty-chip-certified-desk-chair-for-big-tall-12-level-adjustable-backrest-7d-arms-5d-lu-b0gfgztfxf/prices","gtin":null,"id":19715,"model_number":null,"name":"FLEXISPOT ErgoX Pro Ergonomic Office Chair 250KG Heavy Duty \u00e2?? CHIP Certified Desk Chair for Big & Tall, 12-Level Adjustable Backrest, 7D Arms, 5D Lu","product_url":"https://mail.mainbuyer.com/product/flexispot-ergox-pro-ergonomic-office-chair-250kg-heavy-duty-chip-certified-desk-chair-for-big-tall-12-level-adjustable-backrest-7d-arms-5d-lu-b0gfgztfxf","urn":"MB-AWIN-GB-B0GFGZTFXF"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"314.49","historical_low":"314.49","last_observed_at":"2026-10-23T03:10:37+00:00","low_30d":"314.49","low_90d":"314.49","median_price":"314.49","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-10-23T03:10:37+00:00"}}