When my husband and I moved three weeks ago, we sold a lot of stuff. Here's a breakdown:
A webcamera: $20 on Amazon
Three college textbooks: $60 on Amazon
Two canvases: $30 on Craigslist
Our tv: $80 on Craigslist
An Xbox 360 controller: $20 on Craigslist
My desk chair: $40 to a friend
A board game: $50 on Amazon
...and various pieces of furniture.
Between all of the things we were able to sell, we raised enough money to pay for the moving van rental! Which was awesome! Less packing, more money!
In some ways, selling things is painful because we can rarely sell things for even half the original price. It makes us feel the pain of stupid purchasing decisions. However, one surprising exception was the board game. It had gone out of print, so we were actually able to sell it for about $10 more than we bought it for!
The college textbooks were "I might need it" clutter from my husband. In our first move, he sold about half of his textbooks and kept the other half "because I might need them." But this time, he was ready to get rid of them all. Good thing, too, because they were thick, HEAVY books! So glad I didn't have to pack those!