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Aliexpress
There’re some similar (or not) items on Aliexpress
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Latest coupon code price check (UTC time):
Transmission Rate: 1167Mbps, Speed of Ethernet Port: 100Mbps, Network Protocols: IEEE 802.11ac, Gain dBi: 5dBi, 6dBi
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Mi WiFi Router 3A 64MB.
Price records source(s): Gearbest
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You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).