If you are looking to just buy comics and live in SE Wisconsin (or willing to drive there) you should come to the Milwaukee Comic Book Convention. No guests mean that you do not have to pay for the guests to come to the con, nor do the dealers so they pay less to set up and are more apt to give you a good deal. You can also attend as a fangirl or fanboy for FREE so if you are just looking for comics to buy then this is the place to go (Entire post in first comment)
The Milwaukee Comic Book Convention will be held at a BRAND NEW LOCATION on SUNDAY January 20 at The Root River Center located at 7220 Rawson Ave in Franklin. (This is about a 10 minute drive west of the old venue and is just east of the interesection of Rawson & SR 26 and 76th St) The convention will be open to the public from 10 AM to 4 PM and admission to the public is free.
There will be comics ranging from this year to the mid 20th century and in price from under a bick to 100s of dollars. Plus tings like toys and graphic novels.
Dealers are also buying comics if you have them lying around you no longer want.
Remember when you come to a convention to buy your comics you get to see what the condition is of everything you buy before you buy it (not take someone else's word for it), once you are there you can buy as much stuff as will fit in your car (or truck, van, SUV or on the back of your bike) and not have to pay any extra shipping charges or have the items damaged in transit (unless you decide to do it yourself).
Plus you do not risk anything by having to use Paypal, credit card online or send a cheque or cash in the mail to pay for your purchase! Remember to bring plenty of cash and avoid having to pay an ATM fee! Most (if not all) vendors do not take credit cards.