Aluminum, Or any alloy metal could be drawn thin enough to be "virtually" zero bezel.
Or how about this, remember the Phillips displays called Ambilight? To this day hands down the best TV i've ever owned. Having a small Ambilight surround bezel makes it feel like zero bezel that is for sure. Now that wouldn't work for multi displays, but it is a wonderful tech that I'm surprised has not been further developed. I guess the consumer has chosen, but really, it was a nice looking display. That being said. Dell is a gouging machine, let's not forget this is the early PC company that used to finance you a 2600.00 pentium 2 desktop. I still have my 1700.00 17inch Inspiron 1720 laptop and what a piece of crap that thing is now. LOL. but I guess 10 years ago it was awesome. but still 17 hundred? which is really what 2500.00 when adjusted? or more? Dell has always been high priced garbage behind the curve. That's just expected of them.