I bought a replacement lamp (Genuine AL AN-C55LP/1 Lamp & Housing) from Advanced Lamps LLC on November 12, 2012. I paid $29.51 for 2-day shipping and it arrived 4 days later on November 16th, 2012.
Replacing the lamp in the Sharp Notevision XG-C68X projector is a relatively simple procedure if one has the correct parts. Therein lies my complaint with Advanced Lamps LLC.
I removed the defunct lamp (which I had purchased from a different company) with the usual ease; it only requires the removal of the back panel and the loosening of the two mounting screws. With the burnt-out lamp removed, I began what had always previously been the equally easy process of inserting the new lamp, screwing in the two screws, and replacing the back panel.
It became painfully apparent, however, that this was going to be far from easy. After an hour of trying to get the screws into the threads of the mount, I finally gave up. I salvaged the two mounting screws from the burnt-out lamp, removed the screws from the new one, and - lo and behold! - the lamp mounted instantly.
I was sweating bullets while I did this, though - these lamps are very delicate; it was only by the grace of God that I didn't damage the new lamp while replacing the incorrect screws it arrived with and installing the salvaged screws from the other lamp.
I called Advanced Lamps LLC customer service today. I was kept on hold for a full ten minutes. Finally, I spoke with a customer service representative who identified himself as "Moises." I explained all that had happened - the late delivery, the incorrect parts, the risky salvage work-around I had to perform in order to get the lamp installed - and for my trouble I received a half-hearted apology and some hindsight advice to send them back the lamp next time I receive one with problematic parts. I would have been happy to take that advice, but the lamp arrived late and on a Friday and I need my projector working by Sunday.
But don't worry, "Moises." There won't be a next time, because I am taking my business elsewhere. Caveat emptor!