This year I've done:
-Emerald City Comic Con (Seattle)
-Vancouver Fan Expo
-Calgary Comic & Entertainment Expo
I'll be doing these in the fall:
-Edmonton Comic & Entertainment Expo
-Stan Lee's Comikaze (Los Angeles)
There are more I'd like to do but I do have some time, family & money constraints. How I pick my shows is through a very simple formula: if there's fewer than 35,000 attendees, my total costs must be below $500. 35,000-100,000 attendees, my total costs must be around $1000. Less than 15,000 or more than 100,000 attendees, I'm not interested. Here's an article that shows the biggest comic cons in North America:
http://blogs.publishersweekly.com/blogs/PWxyz/2013/06/19/what-are-the-biggest-comic-cons-in-north-am... 3 of the cons I go to are on it (Emerald/Calgary/Vancouver). Edmonton had its 1st year last year. It was put together in less than 4 months & had 14,000 people attend (not me though, I was in Disneyland). This year they're expecting double that. Stan Lee considers itself to be a pop culture & multimedia con so it's not on the list but last year had over 50,000 attendees.
Total costs would include: my table in Artist Alley (anywhere from $125-$250 this year), transportation costs (gas+parking), hotel & food. I only include my costs. If I'm bringing my entire entourage, their added costs aren't included in my initial calculations.
At each show, I make anywhere from 2-5 times my total costs. That's in the short term. Then there is also the added exposure I get from being listed on the con's website (I get a lot of hits from them). This has led to sales before the con even starts & pre-orders that people will pick up at the con. Then there are all the sales I get after the con: people ordering custom colors I didn't have at the show, hats I didn't bring but have online & custom orders and people buying hats months after the con because they decided they needed one. Just this week I got a custom order from someone who said they saw me at the Calgary show. That was 3 months ago. This is where business cards are my best friend!
And I know this happens even though not everyone tells me they saw me at a show. My direct traffic is now higher than ever before and especially rises for a couple weeks after each show, more hits from the cons' websites and the fact that suddenly I am shipping way more hats than usual to the area I just recently did a show in.
Small cons (<15,000) are not cost effective for me. And big ones (100,000+) are gong shows where people wait in line for HOURS for everything. They're not generally interested in buying stuff from people that already established. They want official merch for the most part. I may one year when my kids are older to San Diego Comic Con but I would totally expect not to sell enough to cover all my expenses because SDCC & everything around it is shockingly expensive & crowded. I would do it mostly so that we would have a home base to sit for a few while the con is going on. If I made a couple bucks to help pay for the trip, great! But if I didn't, I wouldn't mind either.
A BIG reason cons work for me is because I love them so much. It's the only time I get to see people face to face and see how they love the stuff they buy from me. Rotten apples are few & far between and everyone else makes up for them. I have people who purposefully seek me out each year & are happy to see me-it's a great ego boost and helps me get through the tedious times I'm sitting at home struggling over something that isn't turning out the way I want & wondering why the hell I'm doing this. I have also made some great friendships with other artists that do these shows. We all live in different cities, nowhere close to each other, so meeting up at these shows is a great family reunion. These are the people who understand how & why I do what I do because they are exactly like me or are in a relationship with someone like me. They don't question and/or judge what I do & why I do it and it is such a refreshing change.
Okay. There's another small novel. I don't know if I've addressed your curiosity yet but I have to go to my daughter's school to watch her in a play. I'll return & let you know why I'm doing a show this year where I won't cover my expenses but still consider it a good idea.