Alright, let's see what numbers we can crunch here!
What was your print run for a floppy comic?
I've done print-runs of 50 of various comics, both floppies and collected editions. My latest print-run was 100, but that was for a collected edition, not a floppy.
How many floppy comics do you sell at a con, and what's the rough ratio to con attendance?
It varies a lot - lots of variables here, from con attendance to the weather on con-weekend - but if we use only the con I've frequented most often, I average somewhere between 15-25 copies at a con with an attendance of between 4000-6000 people. Hard numbers on con-attendance is hard to come by, as it's free admittance and no tickets are sold.
I have been to a con with an attendance of about 30 000, but it was more focused on gaming and cosplay, and I sold exactly 7 copies of my comic, despite being there for three full days. :T The general focus of the con matters a lot, but from the sound of the name, Comicpalooza is probably gonna be comics-focused!
(other variables impacting my sales-numbers include: organisation of the con - i.e: do people find their way to the small press market easily - the date of the con, the weather on con weekend, whether or not I've got con crud during the weekend, and also my own social anxieties; sales-pitches are hard when you're scared people think you're weird)
What percentage of your comics do you sell at cons and what percentage on-line?
I'd say it's a 75/25 split in favour of cons - I haven't sold my comics online in any organised fashion, though I'm planning to do so with my latest print-run, as soon as I figure out whether I should use tictail or whether I should go with selling physical items via Gumroad or what. (advice is appreciated - who here uses tictail?)
If you sell e-comics (PDF or CBR), how much do you sell them for, and where?
I do, yes - on Gumroad. Right now it's mostly a bunch of one-shots and one big graphic novel. As for pricing, I put a lower limit, but use Gumroad's pay-what-you-want feature, and the majority of my sales have actually been for more than the asking-price, because apparently people are generous when you encourage them to be.