I've occasionally seen 17" LCDs close to the at price, but any 15" monitor should be okay. You will get a little ghosting, most likely, because it isn't going to be DVI at that price, but XGA resolution isn't taxing on a VGA connection, so you'll be perfectly alright.
I have a 15" LCD, but I wouldn't buy one now, I would either 1. save/shop for an affordable 17", or 2. stick with the CRT until I could do 1.