yes it is expensive this is where I get all my embroidery thread
http://www.threadart.com/?gclid=Cj0K...xgIaAltR8P8HAQ I use the polyester for years never had a problem with there thread the difference between the rayon is that it's a lot shinier and heard it dose not hold as well as the polyester in washing like I said I have been using there thread for years no problems I buy most of my thread from them