Typically RT comms are about $1 for MES. So +8 should be about $39 per net profit.
Yeah $1 RT is equivalent to $10 RT for ES so it is pretty high.
Another way to view it is in tics...
MES is worth $1.25/tic, $5/point.
So 1 tic covers RT at most brokers worth having a day-trading account with.
MNQ,MYM,M2K each need 2 tics per RT... again at most brokers worthy of day-trading business.
Agree, compared to mini's, all-in costs for micros are high, but not even close to preventative.