Quote from OnTheEdge:
At a penny a share a 2500 share trade costs $50 round trip.
if you're routinely doing blocks like that you can get much lower commissions. plus - and Nihabi alluded to this - there's more to it than just commissions. how good are the prices you're presented with? are the up-to-date enough to actually hit? monthly/use fees?etc etc etc.
the brokerage biz is extremely competitive, call a few places and see what they're willing to do for you.
nice ramp! this keeps going i'll have to short.
