We have a Sony VPL-CS4 projector which we have owned for as long as i have been with the company (3 years). I suspect that the bulb may need to be replaced soon and the cheapest one i can find is £257.00.
I have seen that Sony now do a projector that only costs a little more than one of these bulbs. See here for more info:
I don't know a great deal about projectors. Can anybody let me know whether this model would perform as well as my current model? (it is only used once a week or so for powerpoint presentations for 5/10 people)