NP07LP compatible lamp module $90/pc.
Fit for the following projectors:

NEC NP300  
NEC NP400  
NEC NP410W  
NEC NP500  
NEC NP500W  
NEC NP500WS  
NEC NP510W  
NEC NP510WS  
NEC NP600  
NEC NP600S  
NEC NP610  
NEC NP610S