Sell the greater cerulian spellthreads instead. They still go for anywhere from 700g-1300g on my server and they don't cost much to make. Although it's a bitch only being able to make 1 imperial silk a day.
On a somewhat related note. How the hell are people selling the royal satchels already? I thought the only way to get them was to be exalted with august celestials. I was 90 within a few days after xpac, and did the golden lotus/august celestials dailies every single day and I'm only half way into revered. Is there another way to gain rep with them? Or another way to get the damn satchel pattern? Someone help me out here!