I'm pretty sure OP has a 45 or 35, both of which are 1080P and stupid expensive when new. Projectors for sale for about $350ish on eBay, looks like the bulb itself is a lot less. Don't know much about these things besides the crappy ones we have at work.
I got bored and tried looking up what the actual projectors sell for and couldn't find anything, and have no clue what a working equivalent runs. I guess these things either didn't sell well or went extinct some time ago.