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[kingcolex]

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[MarkAz]

Zoomhash is the only place that I know has them in stock and I've dealt with before, that's US based.  You can also order directly from Innosilicon, and they ship quickly and isn't usually much of a hassle.  They're really hard to find used, as you've discovered - apart from eBay and the marketplace forum here, not sure where else you'd find them.

[daveolake]

https://bitcointalk.org/index.php?topic=1159195.0
check here