Google's gmail bids drop value on Ebay

Google is giving free invitation to beta test its gmail to a lot of blogger users, friends and relatives. All the invitations have one additional invitation which they can pass on to their friends. People started selling this invitations on ebay. The prices were hitting $200 and above. Possilble reasons are the most anxious techies who want to test it and be the first few users are paying to see and feel this wonder.
Today they are selling for about $50. What a drop !!!
However, for people who have the patience to wait for the final release of gmail, its free, 1 GB of mail storage.

How come google didn't send me an invitation? I have signed up for blogger and I am waiting :-(
I can't wait further, I am starting get a little hungry on it. I'm keeping an eye on ebay and probably will buy an invitation soon!