It wouldn't be half as bad if they were just honest about the safety ratings- most people just don't need CatIV, but manufacturers seem obsessed with a "me-too" game of dishonestly copying competitors' specs and markings.
This x10 ^^^^
The issue for me is the blatant lying on the safety ratings on the meter case. Now, i'm sure that You, or I, with lots of electronics experience would rightly, and with prior knowledge, take one look at such a meter and go "NO WAY" to using it on anything high voltage, but for every one of us, there are 100million other people who are not lucky enough to know or have learnt any better.
For them, this IS a significant safety issue. For example, anyone could say buy one of these meters secondhand anywhere, get it home, and go "hmm, i wonder if i can measure the mains voltage in my house" and take a look at the front, see the words "600V" and think, hey, excellent, this meter is perfect for that.
This is why CAT ratings were introduced, to help none expert users choose test equipment that is properly rated for the task.
So, once this basic issue is found, i couldn't care less if the inside of the meter is machined from solid gold, and uses unicorn horn hybrid un-obtainium trimmers or what ever!
So, Uni-T, fix the basics, and THEN we can discuss if the meter is "value for money" or not.