Well, if it's just the screen that's wonky, it costs approximately >$200 to get a replacement screen. Also, YMMV in replacing the screen/individual ham-handedness. I've used these guys
http://www.screentekinc.com/ to source replacement parts for a pair of laptop screens a while ago, but one of the laptops, the power inverter for the screen also needed replacing, and the other one worked out well. If you aren't intending to do this your self, with most of the labor rates in the Calgary and I guess beyond, it might wind up taking 300~400 total(Including price of screen) to fix it, making it close to the cost of a new laptop. (albeit low end)
If you just need a display, laptops usually come with an external display adapter and you can just hook it up to a monitor and run it that way. Monitors, if you go with the Big CRT monsters will now run you anywhere from 0~150$? as people are just trying to get rid of the things and move onto the slim new-hotness of LCD displays.