Well, if anyone reads this I did find one source, Bluestone Perennials. They have an excellent rating & reputation, and it looks like a good price.

You can also try here:
Horticultural Products & Services

They sell in bulk so the smallest packet is 1/32 oz. which they say is approximately 200 seeds. The price for that size is $5.85

I've ordered from them twice & have been very pleased both times.