Just so you know, almost all video cards with twin DVI ports come with adapters. IIRC, both my dads 9600GT and my 9800GTX came with two adapters. Hell, if yours doesn't include one I could mail one of mine to you. I have about ten bazillion (slight, slight exaggeration) of those things lying around. :p
As far as monitor prices go, my dad picked up a 22" Acer monitor (native resolution: 1680x1050) for around $200 when we put his system together. Them prices definitely be fallin'!