I haven't personally been to these shops, but one of the girls from our group brought back some fantastic Jelly Rolls from here
Maju Store - Jalan Sulewesi - Shop #19
Aimen Textile - Jalan Sulewesi - Shop #93
My daughter has just returned from a trip to Bali and has purchased some Jelly Rolls and Fat 1/4's for me, she is posting them over from Melbourne. If there is an address attached to them I will pass it on to you.
Hope this helps as the Jelly Rolls are absolutely stunning as are the Fat 1/4's