{"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":"2026-09-17T12:29:26+00:00","price":"17.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0H6WRMZY3?maas=maas_adg_api_588052515283475030_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBf3f02c3e232dee00843a38531c9c53d5&aa_adgroupid=c9e6c5c1d9907e50bb14b900460530e2_PBSEP_!!!affid!!!_118045_&aa_creativeid=0438XJ01HzYATIYmgBph_b2HSe_bhipss20rP4BT61XIU3UYU_c"}],"product":{"brand":"pluseight UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/kids-insulated-water-bottle-with-straw-lid-350ml-bpa-free-double-wall-vacuum-tumbler-18-8-stainless-steel-leak-proof-keep-drinks-12h-hot-28h-cold-b0h6wrmzy3/prices","gtin":null,"id":11218,"model_number":null,"name":"Kids Insulated Water Bottle with Straw Lid, 350ml BPA-Free Double Wall Vacuum Tumbler 18/8 Stainless Steel Leak Proof Keep Drinks 12h Hot & 28h Cold (","product_url":"https://mail.mainbuyer.com/product/kids-insulated-water-bottle-with-straw-lid-350ml-bpa-free-double-wall-vacuum-tumbler-18-8-stainless-steel-leak-proof-keep-drinks-12h-hot-28h-cold-b0h6wrmzy3","urn":"MB-AWIN-GB-B0H6WRMZY3"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"17.99","historical_low":"17.99","last_observed_at":"2026-09-17T12:29:26+00:00","low_30d":"17.99","low_90d":"17.99","median_price":"17.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:29:26+00:00"}}