I have been dyeing fabric and clothing for my own use for several years now...I always go to Dharma and never have I regretted it. The only exception is when I buy a tone on tone white which I also dye but for a different effect. Dharma clothing blanks are such good quality that my [grown] kids even peruse the catalog for items they want me to dye for them. Everyone wants the bamboo socks for sure. I do buy my fabrics, cotton and silk, from them. Maybe I could find it cheaper else where but why would I want to chance not getting good dye results just because I want to save a few dollars. I find dyeing fabric to a fun summer project that never gets boring. On a side note if you have kids and want to do a quick non messy dye project try this:
silk scarves, [you can use cotton or rayon but silk works best. I get prehemmed scarves from Dharma]
sharpie pens
rubbing alcohol in a small spray bottle.
Use the sharpies to color the fabric....in a pattern or in just blocks of color
Spray the scarf with the rubbing alcohol, use a small amount to keep a pattern intact, with just blurring effect or use a lot of spray to have the colors run and blend. Let dry, and set with an iron on silk setting. The color is permanent at this point so if you want you can over color, spray and dry again. I also use fabric paint to add some additional elements such as dots or stripes. Also just use permanent stamping ink to rubber stamp images on the colored scarf.