bitfinex has an OTC trading desk that can help facilitate large trades.
Coinbase has the same, and I suspect that other major exchanges do as well.
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Quickseller , why do you ignore all these negative rating(s)?
i know some of these negative rating might be from competitor's!
But, don't you think you have to do something about this? i like your timely contribution(s) and response on this forum whenever, such needs arises but, the negative rating may be scary most of your customer's away to your competitior's
NOTE: I'm sorry this a bit off current topic. Accept my apololgiseRegard's
Bitcseo