Hi
There is a link at the top of the website
http://www.realtobaccoextract.com "SHOP" that will take you to the shopping cart to order
Yes, these are pre-made juices.
We do sell the concentrate in quart bottles to juice makers but that is a bit much for DIY I think (32 oz minimum per extract). That is the price point you are probably looking for but unless you can use that much it isn't practical for either of us.
The only exception is blood relatives (and I only have one ugly sister left to marry off). Oh... one other exception is the serious hobbyist - I will consider that on an individual basis.
I think that the 30 ml ready juices are suitable for tweaking with added flavors as a DIY. These flavors are excellent bases as they "round out" the flavor profile lacking in most synthetics.