No, my tricked out MA Bronze's aren't going anywhere.

The Stereo-Link USB DAC was an
incredible improvement over my soundcard, but I can't stress enough that my stock soundcard blows arse!

It was dumb luck that I found it used that cheap, and I doubt you'd find another. However, there's a guy at AC selling an external USB DAC by M-Audio. He's a very solid, standout guy, too- this one's a lead-pipe cinch, and a great deal. He's asking $80, and the thing is something like $250 new.
Here's a link if you're interested in dropping him an email. The one caveat is listed in the thread, that's that you have to know if your OS is compatible. Most will be.
As for the rest...well, I do have some stuff I'd part with. I have a pair of Monitor Audio Bronze 3's that are sitting unplugged (they're nice, but I also have Monitor Audio Gold Ref 20's and a pair of MA Silver 8i's, along with the Bronze B's and all the surrounds. So you could say I like their "house sounds"

. If I can ever find another Onix SP3 tubed integrated I'd probably sell the Nad integrated- I still can't believe I was stupid enough to sell my little tube amp!

I haven't really been motivated to sell anything, but I have lots of stuff I don't use. [Side note: I keep buying stuff I don't need! I found some Infinity Micro II's a month ago, and a stray Cambridge SoundWorks Ensemble II showed up at my house today.

Is there a 12-Step for Audioholism?

]
Short of that, just keep an eye out on A'gon, eBay, AudioCircle, here, and AudioKarma. I've never used Craigslist, but that may be viable, too.