I finally got around to setting up an eBay store a couple of months ago, kind of out of financial necessity but also because I have collected way too much stuff and need to start getting rid of it. I have no kids so my ultimate goal is to eventually sell everything so whoever ends up having to handle my estate when I "croak over" doesn't have to deal with it.
I've been primairly selling individual cards lately but will be selling lots and sets of cards eventually. I also have stamps, comic books, CDs, regular books plus various other "stuff" I will be selling. Since I've started selling some of the cards and stuff, I'm having fun seeing what sells and for how much. I've had several surprises already. I'm finding that I'm not as attached to the cards and stuff as I used to be since I started selling them. I still have good scans and photos of them if they do sell as well.
I'm also having fun finding cards that are not on this site yet and adding them, kind of like adding cards to my own personal sets. Since I already have the cards scanned, I go ahead and list them on eBay and see what happens. I have a LOT of cards and stuff and am not in any major hurry to get rid of them too quickly yet so I have a few years ahead of me hopefully to work on this phase of my collecting habit. I have cards and stuff in boxes I'm going through that I haven't gone through in a long while so it's like getting them new again to some extent. Anyway, that's my plan.