Okay, here's a few things that I tend to buy at Dharma. Feel free to tell us in your comments what you generally buy there.
Procion Dyes and Dye Supplies
Silk by the yardage I've looked around and the silk is the lowest price at Dharma
Clothing I am posting a picture of their infant onesie because that is what I have bought there but they have lots of other clothing items.
Scarves I have bought silk to make scarves which I thought would be cheaper than buying the scarves but have you tried to roll hem silk? Never again. Now I buy the scarves.