Accent
12
A couple of months back I got a nice 22" LCD HP monitor for $30 off of Craigslist. I think it was around $500 when it came out in 2008, and it is sharp and works just fine for my needs. A DVI to Minidisplayport adaptor to my MBP, and I never have to touch my laptop and have a crisp display that gives me tons of screen real estate.
Unlike musical equipment, computer hardware loses a ton of value as soon as it leaves a retail store. Unless you really need the newest model, I think there are some stupidly cheap options available used. Maybe if I’d hunted more I could have found a larger and newer display for a bit more money, but for what I spent and how good it looks I have no complaints, and working on the computer is infinitely more enjoyable than squinting at my 13" MBP.