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It´s instant, atleast the times that I did :)

Oh you mean there are always buyers on standby?.....sorry for asking all this i might be explaining all this to someone

It's important to pay attention what your sell price is- the last price may be different than the ask.

Yes i agree, reading the price chart will help alot.

I think that Coinbase buy and after they sell when there are a seller!

Nice one, thank you mate!