Also keep in mine if you just recently quit smoking your taste buds still havent had time to heal. I'm close to the two month mark and I've found flavors I used to hate now taste great, while a few I don't enjoy as muchas I did when I started.
If you have a tractor supply you can normally find gallons of PG for $20. When I went looking for it, it was in the horse section. I believe they add it to their food, but I'm not positive of that. USP and kosher certified.