I bought an AOC 17" from dabs las month for £89, it's a flat screen, does 1600x1200 at 75Hz and 1280x1024 at 85Hz. It was a bargain, they also have 19" ones for a little more.
I'm kicking myself for using a little ####ty monitor for so long, degrading my eyes and pissing me off. Get a decent monitor now, you'll never regret it!