For those of you ordering mining rig parts from Amazon, you can get yourself a free 30 day trial of Amazon Prime, which entitles you to free 2-day shipping (and a host of other benefits, including a streaming video library that is on par with Netflix’s service). You can cancel your Prime trial immediately after signing up, but you’ll still retain all of the benefits for the full 30 days—which is nice, since we’re heading into the holiday shopping season where that free fast shipping will come in handy!