Reddit mentions of Vegetable Glycerin (RSPO Certified Halal Acceptable Palm Derived) 1 Gallon + Propylene Glycol 1 Gallon - USP - Kosher - 2 x 1 Gallon Container - Safety Sealed HDPE Container with resealable Cap

http://www.amazon.com/dp/B00Z2CC7Q6?psc=1

This is a thing I found, just bought 10lbs vg from bulk apothecary and don't use vg much, but you're in luck!

Edit: my apologies, not free shipping :( but I did find this. http://www.essentialdepot.com/product/CUBE-4VG.html

Vegetable Glycerin 1 Gallon + Propylene Glycol 1 Gallon - USP - Kosher https://www.amazon.com/dp/B00Z2CC7Q6/ref=cm_sw_r_cp_apa_P92 NBsybYZH35GW

Get the nic and flavors from wizard/nude/etc. Do a little research, Sort out how to measure and store, and voila, 2 gallons of juice for a couple hundred bucks. Too easy.

Please, please, please don't try and use normal food flavorings like the things you find in a grocery store in eliquid, it's a lot nastier than you might expect.

I would start with This VG+PG Combo deal, then get reputable nicotine from someplace like Nude Nicotine or wizard labs and flavors from a supplier like The Flavor Apprentice

You will also want bottles, a digital scale and some sort of transfer media (pipettes, eye droppers, etc)

This should be a solid foundation, but don't expect that you will be saving a ton of money off the bat. You should realistically expect to spend a couple hundred dollars to get fully setup with a decent flavor library and the basic mixing equipment but once you do, it can save you incredible amounts of money down the road.