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Are you sure fees depend from this? I thought that if I would put 1048 - I would just buy bigger GRC amount for the same price.
In this case I didn't decide to wait, although for bigger numbers it might be good to wait
Also in this case the difference was not big - 1 satoshi

My mistake. This applies only to Poloniex exchange. See https://poloniex.com/fees/

I didn't trade there, but I heard there are occasionally some problems, delays