I'm in the same spot buddy. I've got a couple of really good, a few more of good, and a lot of ok. Eventually, yes I would love to be a pro but I have a long way to go. I'm not jumping up and down to sell but on an Army salery with a baby boy on the way I can't get new gear. So, the wife and I have an agreement that anything I sell, I can keep that money just for me to go towards gear.
I only know 2 sites that you can sell from without paying a fee but I'm sure that effects my bottom dollar, deviantart.com and fineartamerica.com I settled on http://michael-carrigan.fineartamerica.com/
I also did a facebook and pintrest linked to the site http://pinterest.com/mcarriganphotos/ https://www.facebook.com/MCarriganPhotos
The site does give me stats on visitors and I'm getting them but no sells yet.
Give it a shot and I wish you the best and if you make any progress keep us up to date.