Got a copy of Photoshop 4.0 retail complete for 2.50 at a thrift store and it went for $85 shipped on half.com.
Got Mortal Combat: Dark Alliance for $.01 at CC and it went for $10 before shipping, I think. What is that, almost 10,000% markup?
But I haven't auctioned in years, except on behalf of work. With half.com., I can generally get a decent sale price EVENTUALLY, and no damn listing fees for nosales. So it just sits there until it sells. Every couple of weeks, I drop or raise the price a bit to get it to show up in peoples' email notifications if they are price watching without browsing.
I pretty much list everything I get there. If I want to keep it, I price it too high, higher than the price I can replace it at. And sometimes those are the prices I get.
Wait... I'm pretty sure I sold something for $20 or so bucks that I got for free... darned if I can remember what it was though.