From a tip on reddit. $30 for a kilo of material. I just ordered one.
https://hilleberg.com/eng/extras/ (near the bottom)
Fabric Kit:
“In order to minimize waste in our production process, we have created Fabric Kits. These are simple paper bags filled with left-over material from our production.
Each bag contains approximately 1 kg of mostly fabric. The fabric pieces are all good sized and range from about 3 m to 10 m, and are a varied mix of inner and outer tent fabrics. Some bags may also include guy line, zippers and other components as well.
Because these are bags of assorted items, we cannot guarantee exact quantity, type, or color of fabric; the size of the fabric pieces; or exactly what items will be in the bag. It will be a nice surprise for you when you get yours!”