Question
Dear Tom,
I need to buy zebra grass and gold bar grass, but seeds, can you help me ? Where I buy it ? Thanks for all, Raul.

Answer
Hi Raul,
Thanx for your question.  The gold bar grass is a hybrid that does not produce viable seed.  You'll have to purchase plants.  The zebra grass, I could only find offers for seeds on ebay.

http://cgi.ebay.ca/Zebra-Grass-(Miscanthus-'Zebrinus')-Fresh-2008-Seeds_W0QQitemZ140288778522QQcmdZViewItem

I hope this helps.
Tom