My monitor (CRT) was about $100. Sure CRT's may be dying, but since LCD's have ghosting and a low refresh rate (isn't it like 75htz?), they strain my eyes pretty badly. I tried a very nice 19" Acer LCD with an 8ms response time, but even that felt like I was playing with a HUGE blur and it made me sick to even attempt to play any games.
Fast foward to the past year or two and with my major, CRT monitors are better for the things I'm doing because if I were to take a job in graphical design and printing, CRT's are better because the colors are better than on LCD's which is good for proofing.