I mainly do freesites, that is where I'm getting the sales. I get the odd gallery listed too, but the freesites are what I focus on. I also have my hub turned LL - this mainly sucks time & doesn't return anything yet

but it's got good pr & it's for the long term, while the freesites are mainly to get some fast cash.
Up till March I was working ft outside the house, so 2 freesites/week was good for me. Now I try to do 5/wk, but mostly end up with 4.
As you get better & faster at it, you will start to see more traffic, then more sales. I'm sure what I'm doing and making is piddly shit to a lot of people in this biz - in fact, I know it is

but I'm not necessarily looking for the big bucks, just to make a living, like I would anywhere else. If that's what you're aiming for then I think it's possible, even probable, unless you give up too soon, or just totally suck
Main thing I have learned is that you have to have LOTS of patience - just like any other business, the first year is going to be the worst, you'll lose money & think of bailing every day, but get over the hump & it gets better.
well, that's my story & I'm stickin to it
EDIT - oh ya, and TIME - your family will hate you & complain they never see you, you will not sleep, your eyes will go buggy and your hands will cramp - just be prepared
