$27.95
If you want cheesy marketing language to convince you to buy, go to the manufacturer's website (www.aerobie.com).
Yeah, it's a novelty, but a lightweight, easy to travel with novelty that can make a pretty darn good concentrated brew. Comes with a carrying pouch. Buy two and you'll have a spare pair of mittens on a cold winter day (line stolen from Reverend Horton Heat).