Our closest spot to get seeds is in New Freedom, PA. Only about half an hour away, they stock every vegetable kind and many flower seeds too.
I bought a pound of sunflower seeds from them this spring. Not a big stack of the paper packets with the pretty picture on the cover, just a big bag weighed out
Like most things, buying in bulk right in their office has its advantages. A pound set me back $8.
And then planted where we have envisioned a privacy fence/planting. Just to test it out without the time and expense.
The results are beautiful. And covered with bees and such all day long.
A beautiful way to create a wall.