EDIT: following my review, I was contacted by a Monoprice customer service manager, and she resolved the issue to my satisfaction. I added stars in recognition that Monoprice can and will do the right thing once you get in touch with the right person.
Bought a 27" Zero G monitor that had the DisplayPort input go bad within 3 months. Monoprice replaced it under warranty, and the replacement had the same failure in about the same time. An identical replacement was no longer available, so Monoprice would only give store credit as compensation. I added $100 and purchased the next least expensive comparable monitor, which has also now had the DisplayPort go out within 3 months. Again, an identical replacement is not available, and Monoprice will only give me a store credit, so I would have to add another $100 to get a comparable monitor. The quality problems and return policy make this a never ending cycle designed to extract ever increasing amounts of money from me for hardware that is destined to fail well short of the warranty period. I will never buy from Monoprice again.