I bought a replacement lamp from projectorscreen.com for my Epson5040UB. Epson website did not have them, ebay did not have them, amazon did not have them. But, these guys had it in stock.
When I called to be double sure, the person who picked up was super professional. He went and checked physically that the lamp was there and confirmed. Shipped it promptly and the lamp was excellent.
Fit in very easily into the projector(I read horror stories of people on amazon who bought the cheaper ones from China).
Thank you for excellent service