I just found a site that has inexpensive Toranni 750ml bottles. $4.85 each.
BevTech, Inc.: Torani and Schokinag
So. Now I have the syrup and I need to get crackin on making the water.
I'll use reverse osmosis water from Culligan and I have a kegging system with dual regs for 2 separate gas settings. How many volumes should the carbonated water be? What is typical? 15psi, 30psi?