Well, I have just bought one of these second hand on eBay Hope I haven't made a mistake
, seller seems to be reputable. Can't be worse than the shambles of dealing with extremely dodgy sellers on AliExpess.
Like others I found it very difficult to obtain hard data. What looks like a very comprehensive review by Jos Verstraten is written in Dutch
, but looking at some of his other reviews he seems to actually use the instrument so it can't be that bad.
Hopefully, I will be able to post my experience with the meter.