Indeed; I got a positive impression of BestChange since browsing Bitcointalk, since respected community members wore the BestChange signature. But this case makes me hesitant to continue trusting BestChange in general. If BestChange ratings can so easily be manipulated, it begs the question of what use that site even is.
I didn't know how this ratings work but I certainly don't like it and I don't understand why would positive feedback be any different from negative feedback.If they say how someone could abuse feedback for negative reviews, than I can say that anyone can do exactly the same thing for positive feedback to create fake reviews.
In my country, Greece, it is not legal to make a purchase worth of beyond 1,500 EUR with cash, as they say, to avoid tax evasion. You must only make it with bank accounts, credit/debit cards and cheques.
This is crazy, I don' understand how people accepted this rules 
So that means you can't even buy a laptop, bike or cheap used car with cash if it's 1,501 euros?
It now sounds like OpenChange uses deposit addresses owned by another exchange, and not their own funds. If that's the case, the Reserve: $175 804 859 probably isn't correct.
I think they are probably using Binance and other similar centralized exchanges like that, and they use their own account for trading and taking percentage earnings.