Well, I have one and it's generally a nice and robust meter.
Considering its specs and features, it would be well worth $150,-
I've bought mine as a demo instrument for about the same price (+VAT).
It turned out my sample did not meet the accuracy specifications for the 6V and 60V ranges and I could not find a calibration manual anywhere (that's the downside of buying no-name stuff).
After that I lost interest, so I also have never tried the actual data logging. I use a proper lab bench DMM for that...
Long story short: The instrument is nice as long as it meets its specs, but if it doesn't, how do you calibrate it?