In general, you have to spend hundreds of dollars buying a set of silk bedding. Why silk is so expensive? Who can tell me?
A yard of woven silk cloth needs almost 3,000 silk cocoons. It takes a whole lot of mulberry leaves to produce those cocoons. After eating 200 pounds of leaves, the worms grow 70 times their original size to produce one pound of silk!
Now, you will know why silk is so costly.