You gotta be careful with many of them .. Some LLC-only companies could disappear quickly.
I do think that 0.01/share is kinda expensive, adds up quick. Many of them will negotiate the rates, I have been quoted rates down to 0.0035/share 1$minimum on a trade plus the ecn rebates pass-through, 90% pay out. And that's with looking around for a few hours and a few phone calls.
Mik.