{"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":"229.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0DZ64S4M8?maas=maas_adg_api_579551081033313738_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBcae1b3705edded0067696d763ce33b2b&aa_adgroupid=d05f35b4c1aacaf70f000713a71c6ca4_PBSEP_!!!affid!!!_118045_&aa_creativeid=24f9Y4NeMFK89_bZ_bw7ym9iJB5e_axdtqCUdtITHCdlPe5d6I_c"}],"product":{"brand":"Waterdrop-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/waterdrop-g5p500a-alkaline-mineral-ph-ro-water-filtration-system-500gpd-b0dz64s4m8/prices","gtin":null,"id":8475,"model_number":null,"name":"Waterdrop G5P500A Alkaline Mineral pH+ RO Water Filtration System, 500GPD","product_url":"https://mail.mainbuyer.com/product/waterdrop-g5p500a-alkaline-mineral-ph-ro-water-filtration-system-500gpd-b0dz64s4m8","urn":"MB-AWIN-GB-B0DZ64S4M8"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"229.99","historical_low":"229.99","last_observed_at":"2026-09-17T12:27:58+00:00","low_30d":"229.99","low_90d":"229.99","median_price":"229.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:58+00:00"}}