{"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":"2026-09-17T12:27:03+00:00","price":"19.99","retailer":"Amazon UK","source_kind":"offer_check","source_url":"https://www.amazon.co.uk/dp/B00352YBB4?maas=maas_adg_api_592388559938624374_static_12_201&ref_=aa_maas&tag=maas&aa_campaignid=0a643cf523b775142609495fd9d7916d&aa_adgroupid=6fa4cefb1c8d26a20df927e61fcfe4d2_PBSEP_!!!affid!!!_118045_&aa_creativeid=1cabV0ZlUrLUMX6Nh0yGW7YR3K9l7P9w4MvK0kv6nmJFdj8_c"}],"product":{"brand":"TP-Link UK","evidence_url":"https://mail.mainbuyer.com/evidence/products/tp-link-sm321a-gigabit-wdm-bi-directional-sfp-module-1000base-bx-single-mode-lc-simplex-tx1550nm-rx1310nm-up-to-20km-ddm-hot-swappable-b00352ybb4/prices","gtin":null,"id":6884,"model_number":null,"name":"TP-Link SM321A Gigabit WDM Bi-Directional SFP Module, 1000Base-BX, Single-Mode LC Simplex, TX1550nm/RX1310nm, Up to 20km, DDM, Hot-Swappable","product_url":"https://mail.mainbuyer.com/product/tp-link-sm321a-gigabit-wdm-bi-directional-sfp-module-1000base-bx-single-mode-lc-simplex-tx1550nm-rx1310nm-up-to-20km-ddm-hot-swappable-b00352ybb4","urn":"MB-AWIN-GB-B00352YBB4"},"summary":{"currency_code":"GBP","currency_symbol":"\u00a3","has_history":true,"historical_high":"19.99","historical_low":"19.99","last_observed_at":"2026-09-17T12:27:03+00:00","low_30d":"19.99","low_90d":"19.99","median_price":"19.99","observation_count":1,"priced_observation_count":1,"retailer_count":1,"span_days":0,"tracked_since":"2026-09-17T12:27:03+00:00"}}