@Sill Territorial Seed Company in Oregon has the purple sweet potatoes, but they sell them as part of a sweet potato collection, 2 plants each of purple, Beauregard (my fave), and O'Henry, a white fleshed variety. They ship live plants in mid-April or mid-May.
Edited to add: they also have Georgia Jets. Never tried any, but supposed to reach maturity in about 90 days.
The variety I really want is the Okinawan or Japanese purple sweet potato. Its pale tan outside, purple streaked to solid purple inside. They are my favorite. I can only find them at Lee Lee, but they are sprayed and will not sprout.
