Renee’s Garden – Most of the seeds are 2.79 or 2.99. All of these are organic.
Mainstreet Seed and Supply – sells seeds by the ounce or pound, so I’m not sure exactly how that works out as far as affordability goes. Not all of these seeds are organic, but they do have an organic section.
Burpee – It seems like all these seeds are 3.95/package. They do have a good selection though. Not all are organic.
Botanical Interests – most expensive seeds are 5.49, but most seeds are under the $2 mark.
High Mowing Seeds – sold by the ounce or pound. All organic seeds
Park Seed – Wide variety in price, not a great selection it seems.
Grow Organic – only sells in quantities of 1/4 lb. more than I want to pay currently.
Natural Gardening Company – Prices seem a bit high.