Typically most Realtors will charge between 5-6%. This is usually split equally between the lisiting company and the selling company. While what they charge certainly matters, it's not as important as what they do for what they charge. What the public tends not to know is that 80% of all new agents won't last more than two years in the business. That of those who do remain in the business, the average agent earns less than $40,000 a year before taxes. In other words the majority of agents working at any one time really aren't that great and unfortunately you don't really know how good or bad your agent is until it's over and too late.
Being successful in real estate requires a huge commitment of time and money and again unfortunately most agents consider real estate to be a low overhead business and end up with incomes to match.
I've attached a link below that you may find interesting on how to find a great Realtor.
I wish you all the best.