No more Gmail invitations?

Here's my opnion..
It seems like google stopped handing out invites for the time being. The scarcity of invitations are reflected by cimbing prices on eBay (around $70 at the time of writing).
Since Gmail is still in beta, Google may be sending out invitations based on "waves" while testing its petabyte servers to see if it can handle the load and to analyze other problems that may occur. If everyhting is working up to expectations, then it gives the green light to send out additional invitations. When this will happen, only Google knows. So cross your fingers and don't hold your breath. I'm sure more will be coming!