Like all other small businesses, you need to figure out some numbers and decide what it takes to run it and how much you can make. Location varies greatly.
My close friend used to be a top stager in NYC, interviewed by HGTV and SmartMoney and made good money. That's because most of the properties were around a couple of millions and dropping $5000 for a staging fee didn't look so bad.
When she moved to Colorado, she found out there were no clients willing to spend that kind of money on staging. Normal fee is like 500 bucks a house.. That killed the idea.
A lot of people wanted to go out do a business cuz they like the idea. OH, I get to decorate houses all day long. No, it's a lot more complex than that. You got to know the market and know how it operates and how this business can pay.
Like all other sales related real estate businesses, you also need to figure out how to market your business and get clients and not go crazy with marketing cost. I made that mistake so I know..