For American Express Gold Card holders, you can still obtain 3-day passes. You are limited to two tickets, at will-call. Must present Gold Card & Photo ID in your name. The price (including fees) is $567.50 per ticket. This is twice the price of normal cost (when tix were available), so AX is into the scalping business too. But then, us AX Gold card holders can afford it. Sheesh.
So if you are an AX Gold card holder, go to http://ticketmaster.com/ and search for "Desert AMX VIP Event" - don't type in Coachella.
Good thing I bought my ticket at the pre- pre-sale from dukat @ $223 (inc fees).
AX - don't leave home without it!