{"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":"2026-09-17T12:27:11+00:00","price":"169.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GVG582L9?maas=maas_adg_api_588870224729489810_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB46aedfa10a68c55a37174211e3ab0f19&aa_adgroupid=a0f64fa4b629f26bd5bf7a6273478aaf_PBSEP_!!!affid!!!_118045_&aa_creativeid=476fwfTHwqZRuQWZ0Uj4899hbDcuuA9_b5X9beJWYYOhfW_ao_c"}],"product":{"brand":"Umitec UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/zonecraft-led-face-mask-red-light-therapy-mask-red-light-eye-mask-four-modes-10-minutes-remote-control-4000mah-storage-bag-head-strap-eye-pad-b0gvg582l9/prices","gtin":null,"id":7091,"model_number":null,"name":"ZoneCraft LED Face Mask, Red Light Therapy Mask, Red Light Eye Mask, Four Modes, 10 Minutes, Remote Control, 4000mAh, Storage Bag, Head Strap, Eye Pad","product_url":"https://mail.mainbuyer.com/product/zonecraft-led-face-mask-red-light-therapy-mask-red-light-eye-mask-four-modes-10-minutes-remote-control-4000mah-storage-bag-head-strap-eye-pad-b0gvg582l9","urn":"MB-AWIN-GB-B0GVG582L9"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"169.99","historical_low":"169.99","last_observed_at":"2026-09-17T12:27:11+00:00","low_30d":"169.99","low_90d":"169.99","median_price":"169.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:11+00:00"}}