I have accounts at 2 online brokerages to trade individual stocks.
My Merrill Edge account gives me 30 free trades per month because I carry more than $25,000 in assets in the account. Otherwise, the trades would cost me $6.95 each.
I also have a Folio Investing brokerage account. Folio charges $30 a month for unlimited stock trades (as long as you do them at the market in 2 daily time windows). With Folio, I can also place limit or stop orders for $3 a throw. With the Folio setup, there is no minimum account balance required.
Hope the info helps.