What about comission? if you scalp you can take very small profit 2-3c. i have comission $0.55 for 100 stocks. what your comission? is it possible to get profit by scalping with broker comission $0.55 for 100 stocks?
Scalping is only possible with the most liquid of assets. Look for liquidity. Also understand more about brokers that allow scalping. Market Makers do not like scalpers. Market Makers are sort of like scalpers themselves and don't like it when someone does it to them.