I have bought a few comics from E-Bay over the years. My experience has been very positive over all. But with E-Bay, it can be difficult to drill down to the actual comic books. I spent hours looking through listings when I was looking for comics.
With the new website, Comic Swap!, you will not have that issue. All they do is comic books. They have the lowest fees out there with a straight 6% on sales.
The really KOOL thing about Comic Swap!, you can swap comics with others for absolutely free. I could trade you an issue of Amazing Spider-Man for a copy of Batman. We used to do this as kids and just makes sense in this day and age where comics are way to expensive to collect everything.
You can also put up a list of comics you are interested in finding, purchasing, or swapping.
This is a KOOL site with a great geeky appeal. Check them out if you are a comic geeky like me.