{"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":"2026-09-17T12:29:45+00:00","price":"36.79","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B09CYHCQ7C?maas=maas_adg_api_578495573240933406_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=PBee25b29f1520178f461dd1d94d99677f&aa_adgroupid=252a3192b0c9e6237a1a29d91e69e39d_PBSEP_!!!affid!!!_118045_&aa_creativeid=a3f6v3JQJ1M5T46NqHL59zW5p_bUyi_aQ2Ou8miMnYFFVuDIY_c"}],"product":{"brand":"TopdonVC-UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/topdon-bt100-car-battery-tester-12v-100-2000cca-battery-health-tester-b09cyhcq7c/prices","gtin":null,"id":11752,"model_number":null,"name":"TOPDON BT100 Car Battery Tester, 12V 100-2000CCA Battery Health Tester","product_url":"https://mail.mainbuyer.com/product/topdon-bt100-car-battery-tester-12v-100-2000cca-battery-health-tester-b09cyhcq7c","urn":"MB-AWIN-GB-B09CYHCQ7C"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"36.79","historical_low":"36.79","last_observed_at":"2026-09-17T12:29:45+00:00","low_30d":"36.79","low_90d":"36.79","median_price":"36.79","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:29:45+00:00"}}