Status update for the refund on one of my three Neptunes:

• 12/29 - 11:06pm ET: Sent email to sales@kncminer.com asking for refund
• 12/29 - 11:06pm ET: Automated response confirming my request was received
• 12/30 - 8:37AM ET: Kurt from KnC tells me that my order has been canceled as requested and he asks for my wire transfer info
• 12/30 - 8:49AM ET: I respond to Kurt's request with my info and inquire about whether I can be refunded in the equivalent amount of bitcoin instead
• 12/30 - 9:21AM ET: Kurt responds to confirm that the refund has been initiated to my bank account and that they do not offer refunds in bitcoin

I have no idea if/when the next sale for Jupiters may be, but it looks like the refund process is extremely quick! I'll update once more when I see the money in my bank account.