jeff...
That link has some pretty darn good prices on their unflavored high nic. (not likey to ship to Canada for "me" but looks like a good source for others !).
I was looking over their sight and had a chuckle.... on the About Us page here:
About Us
Go down to the bottom of the page to the hyperlink under the phone number........ am I seeing that right ??
Obviously a webmasters oversight..... but caught me off guard none the less, lol
A very good source for unflavored USA nic is from a member here named: supertrkre2812 You can read his thread here in the suppliers forum:
http://www.e-cigarette-forum.com/forum/e-cigarette-suppliers-forum/48624-100mg-ml-unflavored-xtreme-nic-juice-sale.html
To the OP, I'm pretty sure you'll never find any nic juice, and definitely sure you'll never find pure, in a brick and mortar to purchase. Nor would you even find pure nicotine online to purchase, as its a pesticide, highly toxic, and is regulated.
There's no excuse to run out

Just stock up 6 months in advance for a safety cushion.
A very good source for unflavored USA nic is from a member here named:
supertrkre2812 You can read his thread here in the suppliers forum:
http://www.e-cigarette-forum.com/forum/e-cigarette-suppliers-forum/48624-100mg-ml-unflavored-xtreme-nic-juice-sale.html
VapeOn,
Greg