I've been thinking about getting an external monitor for my MBP. I was looking around on Craigslist and found 2 20" Cinema Displays, one for $100 and the other for $50 (has some screen blemishes). Is that a good price? Looking on wiki I think it's a 2004 model. It's an aluminum one and I'd like to have an acrylic to go with a hopefully future PowerMac G4 but I know they'll have different connectors.