Hi Gregg,
I’m not familiar with the device you linked to, so can’t offer any feedback there.
One low cost device that turns out to be quite accurate (at least the one I have)
is the PZEM-016 headless kWh meter.
Available on Amazon for 15 bucks.
Here’s a shot of a comparison between my PZEM-016 and my Elkor WattsOn:
The green trace of the WattsOn (a class 0.5 device) matches almost all of the
trace from the PZEM-016. The right pane shows the measured values of both
devices. (lower right corner)
Lots of info about the “016” in this thread: