RAK831
This is the Bargain basement right? 
For a more normally (lower) priced RAK831 (still not a true bargain though) check here:
Which was mentioned here: The BARGAIN basement part 3
RAK 831 total Price: € 122,76 yes that’s cheaper 
I suggest check prices daily… especially on Ali Express, they fluctuate a lot
No I don’t. I checked your Bangood link and was surprised by the price.
Then checked my old link again. Although the price fluctuates it appears to usually have the lowest price.
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Tiny WiFi-Enabled ARM MCU
RTC module - RV-1805 (Qwiic) - use a supercapacitor for backup power
humm, noticed a strange CH330 chip, looks like new USB Serial, TSOP8, awesome !!!
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