Well, apparently there isn't much interest, so I'll likely put it up on eBay in a few days when I get the chance. I'm planning on starting the eBay price at $2499 USD, so if anyone has interest at that level or above, feel free to PM me. I'd just rather not deal with eBay, PayPal, and the lot -- when selling anything in general, much less such a specialized ASIC machine under unique (BFL) circumstances. BTCtalk members seem to be the most informed about these rigs, best I can tell.
I'll edit this post with the eBay link once created, and close the thread once sold or taken off the market.
I'm a bit surprised that the BTC "price crash" has lowered interest so much (if that's indeed what it happening). It's still the only ASIC miner system in the world that I know of which can be pre-ordered currently, ever since Avalon Batch #3 sold out. Unless one believes that BFL will never ship -- or won't until 2014 !

-- the most likely scenario (IMO) is this mining rig should be rather profitable at this price. Perhaps I'll think about listing this again, after BFL has shipped to its first 20 customers...??
Thanks again all, for reading this far and any helpful comments.