Alternately, you can extract pure blending tobaccos yourself. An ounce of tobacco will give you at least 120 mls. of juice. It's not difficult. All you need is some PG, a 20-30 ml syringe and sterile pure cotton balls.
You can blend these extracts together like, Burley, Virginia and Turkish for an super extract. I recommend staying away from processed tobacco like Cpt. Black, Sunday Morning, etc. as they have additives that may be harmful to vape.
One warning though. This action is a lot of fun and you may become addicted. You could turn into an obsessive hobbyist like me.