Wow!! That is really cool!
I recommend you get some from another hobbyist rather than from Ebay, though- you'll get a whole lot more moss, and a lot less risk of it arriving all crispy.
Yeh, I know I have had that happen before. It is only $3 though so I jumped in and bidded it for it. I have green slimmy hair grass in the planted tank now, thus should have waited until got that under control. I wish I would stop being impulsive.