Alright. So, the comic book I'm looking for is Sonic Universe #41. It has a convention exclusive variant cover which looks like this:

I guess if I were to talk wish list, it would be great to get one copy of the variant cover plain and not signed by anyone. If they are already signed, well then grab it. But I'd rather get an unsigned copy than a signed one.
One other thing I'll just mention although I would be stunned to see it there, is that they had another convention exclusive cover last year for Sonic the Hedgehog #226 which looked like this:

If they actually have copies of this one still present, by all means grab one. But I highly doubt it. I don't know how these things work but I just don't think they'd bring back last years exclusive.
Bloody variant covers. What a nuisance. Now, I don't know how this works since I've never been to one but Archie Comics has an event on Sunday July 15 at 10-11 am. This is the description of it:
10:00-11:00 Sonic and Mega Man: Video Game Comics Showcase: Get your game on! Folks from the two most popular video game comic series share what's in store in one, must-attend panel! Learn what's on tap for Sonic the Hedgehog, Sonic Universe, and Mega Man. The editorial mastermind behind both books, Paul Kaminski, is joined by Archie Comics president Mike Pellerito, artist Evan Stanley, and Archie Comics executive director of publicity and marketing Alex Segura. See some exclusive artwork, learn about upcoming storylines, and get a glimpse at the biggest comic book event of the year. We. Are. Not. Kidding. Be there! Room 24ABC
When they say exclusive artwork, I don't know if that means that is when the cover would be available or if they will have a booth you can go to and pick it up anytime. Just trying to provide you with all the info I can.
As far as reimbursment, I'll pay whatever the cost is for the issues and shipping. As well, I can throw in a finder's fee as well or send you off some back issues of other comics I've got. Let me know. And thanks in advance.