{"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":"2026-09-17T12:27:20+00:00","price":"22.17","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B00352UUJ6?maas=maas_adg_api_592388559938624374_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=0a643cf523b775142609495fd9d7916d&aa_adgroupid=8c8f8f4dfdb1a6a4c3ce7885038c3f11_PBSEP_!!!affid!!!_118045_&aa_creativeid=38a9l0vAmOynt4tWNDJDKtirIeO7THyhVm3WZOROnzvidAU_c"}],"product":{"brand":"TP-Link UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/tp-link-tl-sm321b-1000base-bx-wdm-bi-directional-sfp-module-tx-1310nm-rx-1550nm-b00352uuj6/prices","gtin":null,"id":7341,"model_number":null,"name":"TP-Link TL-SM321B 1000Base-BX WDM Bi-Directional SFP Module (TX: 1310nm/RX: 1550nm)","product_url":"https://mail.mainbuyer.com/product/tp-link-tl-sm321b-1000base-bx-wdm-bi-directional-sfp-module-tx-1310nm-rx-1550nm-b00352uuj6","urn":"MB-AWIN-GB-B00352UUJ6"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"22.17","historical_low":"22.17","last_observed_at":"2026-09-17T12:27:20+00:00","low_30d":"22.17","low_90d":"22.17","median_price":"22.17","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:20+00:00"}}