I buy it at Vitacost.com. In fact, I get a lot of human-grade supplements for my dogs from Vitacost, as the prices are good and there's free shipping over $25 (and frequent coupon codes that bring the price down even more).
For coconut oil, I usually get the Vitacost brand (which is cold pressed, certified organic). It runs around $21 for 54 oz. Sometimes they run sale that's buy-one-get-one-50%-off on their own branded products (which works out to about $32 for 108 oz), and they send out a coupon code on top of that for 12% off that works with the sale items (plus always free shipping over $25 of Vitacost-brand products...)---that's when I stock up! Other times they run sales on a name brand like Nutiva or Elfa-Gold that makes those brands great deals. The key is cold-pressed and organic, whatever the brand!
BTW, if you decide to order through Vitacost, send me a PM. I can send you a code for $10 off your first order of $30+.
If you are a member of Costco, I recently saw Nutiva in huge jars there at a great price (less than I pay online, but I don't have a local Costco and it was too big a jar to fit in my suitcase...).
