Since it involves credit and debit cards, I will assume a KYC is mandated here?
If it does, I don't see any difference when buying through the local or global exchange.
Even Internet Explorer,Safari and Firefox are beating them.
On the desktop, I can't remember Opera beating IE and Firefox.
And on mobile especially back in the dominance of Symbian OS, I guess using Opera turned into a Handler version isn't counted as a legit stats since it was modified.