I'm
such a bottom feeder!
Heh, just kidding. Actually, I got into fan cels because I liked the vividness of medium and wanted to get good enough to be able to paint my own stuff. Color has always been an issue with me because no matter what I try it usually falls short of the picture in my head. So I started out by taking manga images or fanart I already did and trying to get it to look as good as series art. I took 'commissions' for free from my boyfriend and a bunch of my anime friends just because I wanted experience. I never really kept any of the first 25 or so cels I painted. About the same time I sold some original fanart on ebay, and since there was a link back to my page, some people saw my then-tiny cel gallery and asked if I'd paint them stuff. Same thing as I was already doing, so it didn't seem like a big thing.
It wasn't for several months that I actually found out what cels were worth and how much of a problem counterfeiting can be

(that was a shock! The first cels I looked up were shamanic princess and I was amazed that they could sell for $200+ each... little did I know...)and that was only by accident because I had started searching for any reference on the net on how to actually MAKE fancels. My original source was some Disney kids activities site and it was good enough for me to start (cels are made with transparent acetate sheets, acrylic paint, and paint pens...) but I figured there had to more information out there (it's the INTERNET!)
...and then I got into artbook cels. And I liked those a lot. It's only been recently that I've actually started to consider myself a good enough fan cel artist to be able to start drawing things specifically to be made into cels, and not done in pencils or something else first. Like this one
http://www.darksidemillenium.com/art/cell74.jpg
...and it took more than 74 cels for me to be that confident.
I think fan cels (any cel painted by a non studio artist by my definition) are a great hobby, which is why I keep such an in-depth tutorial on my website. I've taught friends who feel like they have no artistic ability to do cels (and not just anime--I taught my old roommate how to do cels by digging up old care bear coloring books online) and they love it because it's so relaxing and rewarding.
...but then, I probably have a much different perspective on the whole thing because I was painting fancels long before I knew they were collectables, and most othe people only find out about fancels after being a collector of production cels.
So now you know how I got into fan cels. Not what you expected, was it?

I'm such a profit hound, I charge less than half of what I make at my day job per hour, and that's only because I had to cover my art supply bills. God I'm such an evil capitalist pig. :devil
heehee