Welcome to Gaia! ::

If I suggest nothing else, I stress having someone act as editor before you start. :3 Editors are good for all sorts of reasons, they let you know if you're trailing too far off topic in a story, they're your first audience so you've got the chance to get some feedback before going to print. Of course you'll probably need to set some ground rules just so you don't grind any gears. X3

I actually sell comics as my main item at conventions, and they are original art... right now I'm selling three books at $4, $3.25 and $3.25; I plan to change this to one larger book at around $10-12.

Beyond what's already been suggested (editor/beta readers), the best things to do would be to make sure it's good work (which is why I keep wrestling with the temptation to redraw things, but I'd rather get newer stuff out), and talk it up to people. Tell them about it, show them pages, let them read part of it. Have copies they can page through or sample artwork on your table. If your price is reasonable enough, your sales pitch is good, and your book and story appealing, people will bite.

hey there is such thing as a fan-comic, so it is fanart!

i hope doujinshi (fan-comics) becomes popular in North America as it is in Japan. Last convention i sold comics at (just last month actually) the comic we sold was an original comic, it was 5x7, 28 pages and $5 each and they sold 17 out of the 30 copies we printed.

Some other people sold their comics for $10 (it was a bleach fan-comic), i think they over priced but their print quality was AMAZING it was like trade paper back and everything (it was about 30-40 pages?)
a comic should pretty much be sold at $3-$7 anything above retail comic prices is a rip-off (unless the art is godly)

one tip on selling them, is to have the artist who drew it sit behind the table and encourage others to flip through it. That way people feel more pressured into buying it, or you can have great conversations and have people buy it because they like talking to you xd

another tip is to make good fan-comics. Artists who can't come up with good scripts should get an editor or writer (it helps alot). Also a bunch of people could produce a comic together, it's much more fun. The people at conventions are looking for merchandise that reflect their interests. So yaoi comics sell like crazy XD. Generally if the nature of the comic appeals to some fans, chances are they're likely to sell.

i hope all this helps 3nodding

oh and also, DO NOT print comics at home from your printer =__= if you don't have the proper materials it doesn't turn out that great.... we got our comics printed from here (it's in the US so the shipping would be less for you guys?)

Just for the sake of reference, this is the printer I'm using (and feel free to use me as a referrer ^^ ).

There's also this place, which I've never used. They were mentioned in a book I have on webcomics and printing, and did respond quickly to a question I had.