{"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":"2026-11-13T04:11:42+00:00","price":"13.49","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0DNJHHSHL?maas=maas_adg_api_578271754058922202_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PB4c8ea1d4126063e258fc3f0922cb6bf3_c6e0976b7fd2&aa_adgroupid=ea230d1bdac9ed798664101c8e4d2e1e_PBSEP_!!!affid!!!_118045_&aa_creativeid=43d466u2j_aI1rPUwXiL_bNg563Kmid5tX3BOtMPmieAH_biJo_c"}],"product":{"brand":"NCVI-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/ncvi-duckbill-valves-compatible-with-ncvi-hands-free-breast-pump-8111-8131-wearable-breastfeeding-pump-replacement-accessories-2-pack-b0dnjhhshl/prices","gtin":null,"id":22747,"model_number":null,"name":"NCVI Duckbill Valves Compatible with NCVI Hands Free Breast Pump 8111/8131, Wearable Breastfeeding Pump Replacement Accessories, 2 Pack","product_url":"https://mail.mainbuyer.com/product/ncvi-duckbill-valves-compatible-with-ncvi-hands-free-breast-pump-8111-8131-wearable-breastfeeding-pump-replacement-accessories-2-pack-b0dnjhhshl","urn":"MB-AWIN-GB-B0DNJHHSHL"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"13.49","historical_low":"13.49","last_observed_at":"2026-11-13T04:11:42+00:00","low_30d":"13.49","low_90d":"13.49","median_price":"13.49","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-11-13T04:11:42+00:00"}}