I agree with @Cody Campbell its really what you put into it. Commissions are based on sale prices so its hard to say how much you would make. In our area a single side of a commission is typically between 2.25-3% of the sales price (covering my antitrust bottom lets be clear that there is no set commission this is just the range I see here typically). So if your average sale is $300,000 @ an average of 2.5% your average commission would be $7,500 - out of that you need to pay taxes and your desk fee. So figure out what you need to live off of, how many houses a month you need to close and if you have a big enough database or enough hustle to make that happen. Give yourself some start up capital and six months of runway and go for it.
You might check out how prevalent real estate teams are in your area. In my area there are lots of teams - they typically are a successful agent who has agents with specific roles "working" for them - so for instance they supply the leads and you would work as a buyer's agent - working with buyers who they find through their reputation and lead generation efforts. You in turn would pay them a significant portion of your commission and they often have some requirements of your participation in lead generation but its a way to get started with support and some leads provided to you. Not sure how things work there but whoever is in change of a brokerage you are considering joining could direct you to successful teams.
Another great way to get your foot into real estate is to get hired by a big builder. Often times, in my area, they pay a salary (not super good but stable) and a very small commission - its definitely a job they tell you when to show up and when you can leave - however this is a great way to get integrated into a brand new community. If you become the go to person for neighborhood information for new homeowners you could build yourself a really nice farm and go out on your own and leave the builder when the neighborhood starts to turn. We have big subdivisions here that are all built by one builder - not sure about your market. Just hook your wagon to a good builder or you'll be the scapegoat for all the complaints that are sure to follow.
Just some ideas. Its a little tricky to go all commission if you need to generate income immediately. Best of luck!