{"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":"2026-09-17T12:29:06+00:00","price":"13.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B0GK6FW6Y4?maas=maas_adg_api_588052515283475030_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBf3f02c3e232dee00843a38531c9c53d5&aa_adgroupid=ab01090740adf53692364a0617f1a35d_PBSEP_!!!affid!!!_118045_&aa_creativeid=3545ioHftCvOJe_btxutELV4QReeFSxT24Q_ap8tbOE0puYZk_c"}],"product":{"brand":"pluseight UK","evidence_url":"https://mainbuyer.com/evidence/products/stainless-steel-tumbler-with-straw-750ml-25oz-reusable-leak-proof-water-bottle-travel-portable-coffee-mug-for-hot-and-cold-fit-in-car-cup-holder-b-b0gk6fw6y4/prices","gtin":null,"id":10616,"model_number":null,"name":"Stainless Steel Tumbler with Straw, 750ml/25oz Reusable Leak Proof Water Bottle, Travel Portable Coffee Mug for Hot and Cold, Fit in Car Cup Holder (B","product_url":"https://mainbuyer.com/product/stainless-steel-tumbler-with-straw-750ml-25oz-reusable-leak-proof-water-bottle-travel-portable-coffee-mug-for-hot-and-cold-fit-in-car-cup-holder-b-b0gk6fw6y4","urn":"MB-AWIN-GB-B0GK6FW6Y4"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"13.99","historical_low":"13.99","last_observed_at":"2026-09-17T12:29:06+00:00","low_30d":"13.99","low_90d":"13.99","median_price":"13.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:29:06+00:00"}}