As a quick note, I want to point out that it is far cheaper to grow your own organic herbs than to purchase them.
Keep in mind that organic foods are healthier, and are not significantly more costly to grow than the alternative. Use organic soils, and organic seeds that have not been genetically modified. Growing these herbs can be done in a raised bed in the yard, in containers on the porch or in pots on a windowsill.
Do a little research to see how each herb is harvested and dried so that you can store them.