If you have a Walmart near by, since you will need small quantities of seeds, you may want to try Ferry Morse, or Burpee seeds. I have had very good results from both of those seed companies over the years. Home Depot and Lowes offer Burpee and Ferry Morse seeds also. By purchasing locally, you avoid the shipping costs from mail order. In our area, these three retailers offer seeds only in the spring/summer growing seasons. Maybe in Florida, they are available all year long. I have ordered seeds (all kinds including herbs) online from Park Seed, always with very good results.

Try one of these:

Richters
Horizon Herbs
Nichols Garden Nursery
Pinetree Seeds
Johnny Seeds

FataMorgana

We bought most of our seeds from Horizon Herbs or Baker Creek Heirloom seeds. They were a bit more expensive, but we wanted organic, non-GMO, and they had what we wanted.

Baker Creek is one of my favorite veggie seed vendors - I grow exclusively heirlooms and open pollinated varieties. Excellent place to order from.

FataMorgana

My experience with Baker Creek has been less than satisfactory. In the past I made several orders which turned out fine but then I placed a large order and they put a handful of items on backorder. Never did receive them nor did I ever have an email or phone call returned.

I do like Johnny seeds and horizon herbs.

I just discovered Fedco seeds in Maine for herb seeds that are more widely available. I get most of my veggie seeds through them, but the best medicinal herb seed collection I've found is at Horizon Herbs.

If you want mostly the standard herbs, I have bought seeds from Thyme Garden. Their prices are very reasonable, though they don't say how many seeds are in their packets. They have grown well for me.

Here is a link that might be useful: Thyme Garden

We bought most of our seeds from Horizon Herbs or Baker Creek Heirloom seeds. They were a bit more expensive, but we wanted organic, non-GMO, and they had what we wanted.

Any company that labels it's seed as non-GMO and charging you extra for it is trying to rip you off. It is not possible for the general public to buy GMO plants. Its illegal.

Putting that on their advertising is like saying "Anthrax Free" or "Non-Flesh Eating Bacteria Infected" on there. Everything you get is that way anyway, they're just trying to play up on the fears of the uneducated to sell more of their product.