Okay, now I understand. It would be best for your to order the whole herbs and/or seeds and then grind them right before you add them to the alcohol. Even the places I mentioned have to "pre-grind" everything, therefore some level of essential oils and 'good stuff' will be lost in the process and subsequent packaging and storage - whereas very little would be lost if you did it yourself.
I think it's great that you're making your own. I've made a lot of tinctures, and they always turn out to be much more strong and effective than anything you can buy (even Schulze says making your own are better than buying his).