yarn?

i love yarn. i really love dying yarn. i have been thinking about selling handdyed yarn on etsy.com. but, i have been wondering where to buy yarn to dye and sell. should i get a business license so i can buy yarn wholesale? or just buy yarn from online places like knitpicks, wool2dye4, ebay, catnipyarns....?? any handdyed sellers want to offer advice? i think i want to start small, and etsy would be the best way, of course i have hopes of becoming a good store with a big following and making lots of money on what i love doing! (duh, why sell it if i don't want to make money?? i can dye yarn for myself and not worry about you, but i do. i need to dye yarn and you need to buy yarn. it's destiny =D )
any how, now i am off to finishing dying my lambs pride worsted. its going to be used for my felted clogs. noro for the tops, l.p. for the cuff and soles. yummmmmmm