I collect comic books for all of the aforementioned reasons (see the main page), but I have learned over the years that I don't want to wait until I retire to sell comic books. I sell comics because I enjoy doing it. It adds to my collecting experience. Also, and maybe equally important, the money that I make on selling comics, I use to purchase more comics for my collection. So, in the end, I have accumulated quite a personal collection of comic books (over 20,000) for which I paid much less than I would have if I paid for everything from my personal employment income.
Ways to sell comic books
Dealers in your area can be willing to buy your excess comic books, but they typically pay a fraction of what they're really worth. Remember, the dealers plan to turn the comic books around and sell the comics themselves for a profit. So, they'll pay much less. Some sources suggest that dealers will pay 20-30% of the price guide value, but my experience is that most dealers will only pay 10-25 cents (yes, CENTS) per comic (usually less) unless you're selling a key issue (remember that Amazing Spider-Man #300 that you've been sitting on for years?). Then, the key issue is usually only 20% of the price guide value. So, unless you're in a real hurry to dump your comics and get very little money for them, going to your local comic dealer may not be the best way to maximize your profit. If you decide to find a local dealer, an online search can help:
http://anywho.com - search for "comic book dealers" or "comic book stores" (without quotation marks).
Local Comic Book Conventions
Another local way to sell your comics is by selling them at a comic book convention. Most metro areas have a local convention of some kind. You can browse a national list of conventions here:
Depending on the size of the convention, a seller table can cost anywhere from $40 - $600 (or more for the national comic conventions). If this is something that you think you'd like to try, my advice would be to start small. Usually, there are comic conventions at local VFW Halls or churches. It can be an easy, and financially safe, way to get some selling experience at a convention.
One of the most popular (and maybe easiest) ways to sell your comic books is to sell them on eBay. The only negative to this is that it can be costly to do so. Between eBay fees and Paypal fees (you're REQUIRED to use Paypal to collect the money from your eBay sales) you can lose 15-20% of the profit from your comic book sales. However, it is a safe way to sell online.
Craigslist can work well for sales since it's FREE to use and you can keep the entire profits from your sale to yourself. The two negatives to using Craigslist is that you can spend too much time replying to people who never really intend to buy your comics, and you may have to physically meet with people who may want to buy your comics. My advice is to NEVER meet with people at your house. Find a public location if you plan to meet with someone that you do not know. Meeting at your house can let people know that you have valuables inside and it makes your house less safe and secure.
Online Sales : Your own dot.com
For those who may be more serious about selling comic books online, I suggest you set up your own web site. I would only pursue this option after you've made some money selling comic books in other areas. DO NOT start your own web site as your FIRST STEP in selling your comics. Take the time to gain some experience (and confidence) in selling your comics online in other ways first (via eBay, Craigslist, or others). Once you think that you might be ready for your own piece of cyberspace, just search online for the best service for what you're looking to do.
As with any of the advice that I give on these pages, do something that you're COMFORTABLE doing. If it's not fun for you, then DON'T do it. Also, you don't really need any web authoring knowledge to create a workable web site these days. Many of the sites available can help you sell your products without you having ANY technical knowledge of how web sites work. Just make sure you have your working knowledge of COMIC BOOKS and you're all set! :)