That may be the future of juice vendors if nic goes black market. LOL.
Not the cheapest way but another option is getting some pre-mixed custom flavor blend from a vendor like mom and pops or MBV. It's good for practicing the mixing process.
I bought 4 premixed flaves from mom and pops and really love the tobacco haze. I've been dripping it in my igo-l for 3 straight days.