Samsung HLR-xx-67 720p DLP 50" is $1,700 shipped from Amazon.com, you might be able to get a similar deal locally. The 1080p version is almost double the price.
The "light engine" costs over $1,000 to replace so an extended warranty is a good idea.
I'm considering this myself if I don't go for the 1080p set or a smaller screen.
Like EngenZerO suggests the Sony A10 LCD RPTV is also a good choice, I'll probably get this if I decide to get a 42" set.