You'll be surprised how fast you go through it, V. When I bought that first 50 lb box I thought it was a crazy amount, but it was just so much cheaper than buying the smaller sizes that it made sense. Here it is 4 or 5 mos later and I'm on to the next. It is a pain to haul the box up the stairs to my apt, though ...
Also, I might be making a big mistake, but I have not refrigerated it since I have been going through it relatively quickly and am too lazy to portion it into amounts that are small enough to fit in the fridge. Is this a mistake, you guys?