OKEx is what FloatSV uses (see above), buybsv has huge service quotes ~$5 over what you see elsewhere and also charges a 5.5% fee for card purchases, .75% fee for bank wires.
I been saying this. The Gervais Principle applies to aggregations of humans at every scale, and BSV lawr beliebers are the epitome of clueless. They don't understand what they're up against