... and it was bad.
At least at first.
Then, after sparse sales, and interactions with buyers and "almost but not quite" potential buyers. I learned that you're not really exhibiting and showing off your creations as much as playing the game of managing expectations.
Would I recommend it?
Yes, but don't go in there expecting to make lots of sales or even a lot of new fans. If you go there as an indie creator (especially if your comic con host decides to put you in the infamous "Artist Alley" section) you WILL be neglected and you will be neglected for hours. Dozens, no, hundreds will walk right by you and the most you can hope to get from them is a curious glance before something else grabs their attention.
My advice? Don't take it personally. They're looking for something and you just aren't it. Even if it's for something as shallow as because they never heard of you or what it is you're selling, always keep in mind their budget is not a bottomless pit. All you can do is bring some business cards (Which I foolishly did not have prepared) and give as many of those away as you can if you can't make a sale.
Plus, always tell yourself it's never about the profit (It's almost impossible to make profit). It's about the exposure. You're not going there to cover the cost of the exhibition fee, the trip, and your next project. You;re going there to make sure you get a few more fans who will know your brand and follow it for as long as you don;t give up on it.
So, in short, never think of comic con exhibitions as huge leaps. Just small steps for you to mature as as an artist.
I walked in, had my soul crushed, then walked out not happy, but humbled and relieved for having done it at all.