{"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":"2026-09-17T12:27:58+00:00","price":"279.00","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0FNRHFBLQ?maas=maas_adg_api_579551081033313738_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=cae1b3705edded0067696d763ce33b2b&aa_adgroupid=1fd4b29ba099ae0a2369a9eadf4d739a_PBSEP_!!!affid!!!_118045_&aa_creativeid=ba583Y2RSNY02_bEebsljp3aeByZl0xmP0SfCvSVbNgjLeSA_c"}],"product":{"brand":"Waterdrop-UK","evidence_url":"https://mainbuyer.com/evidence/products/waterdrop-k19-hg-instant-heat-mineralized-countertop-reverse-osmosis-system-b0fnrhfblq/prices","gtin":null,"id":8467,"model_number":null,"name":"Waterdrop K19-HG Instant Heat Mineralized Countertop Reverse Osmosis System","product_url":"https://mainbuyer.com/product/waterdrop-k19-hg-instant-heat-mineralized-countertop-reverse-osmosis-system-b0fnrhfblq","urn":"MB-AWIN-GB-B0FNRHFBLQ"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"279.00","historical_low":"279.00","last_observed_at":"2026-09-17T12:27:58+00:00","low_30d":"279.00","low_90d":"279.00","median_price":"279.00","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:58+00:00"}}