I called these guys and they stocked it for about $700 3 years ago. Same bulb but no chassis (keep your current one). Phone: 1-813-238-6481. Verified by me. Likely, they still have it. It was a Cermax 700W Xenon. THe same bulb Sony OEM'd.
At $2200, I'd still say it's not horrible unless you are using your projector for hours per day. I had my Qualia 004 for almost 4 years years and had about 700 hours on the bulb when I sold it. Great machine!
There are more than a handful of [op amps] that sound so good that most designers want to be using them as opposed to discreet transistors. Dave Reich, Theta 2009
Also, do a search. Someone here did a thread on how to insert the bulb into the chassis. If your bulb is shot, I'd remove it and send it to Atlas bulb to verify things (though they did so over the phone for me) and see if they might insert it into the chassis or have further instructions to do so.
I did buy a bulb from Atlas. I kept it in storage and am now going to use it. Hopefully, it would work fine.
I have an email out to them to see what the price is for my spare.
Wondering if there are any other less expensive options for these bulbs.