ET-LAD7700W compatible lamp module $110/pc.
Fit for the following projectors:

PANASONIC PT-D7000  
PANASONIC PT-D7700  
PANASONIC PT-D7700EK 
PANASONIC PT-D7700K  
PANASONIC PT-DW7000  
PANASONIC PT-DW7000K  
PANASONIC PT-DW7700