Sure I have, I sold every single one I thought I could get my money back on, and kept the ones that wouldn't be worth selling (read: that I would sell for less than 50 bucks, might as well just keep those). It says so right there in my post you quoted. I did sell most of the expensive ones though, and pocketed quite a difference as well.
The only pair of ICs I haven't sold in fact are the Cardas, which I could get around 100usd for, because they have small tears around the RCA connectors which would make their selling price plummet.
Edited by elmoe - 5/22/14 at 8:52am