A brand-new 30" probably isn't going to happen. I think I saw one on eBay once for many thousands.
Your best bet is to look for a 30 that wasn't used very much, which you can definitely tell by how yellow the tint of the screen is since the UV from the backlight will tint the plastic LCD yellow over time. Or find a good screen in a messed up aluminum case and replace yours by removing the screen and replacing, or just a good screen that is not in a case at all. The aluminum case is easy to open and replace the screen, just remember to put a towel over the edges so you don't scratch the screen.
I'll tell you a little story; in California we have a 7 year repair law that companies have to carry the parts to repair your electronic device for 7 years. Only we and Turkey have this law. Just before the 7 years was up one of my 30's went bad. I took it to Apple and told them to repair it. Of course they just wanted to give me the stupid glossy Thunderbolt display. I vehemently rejected their offer. After many, many phone calls with lots of high-ups to whom I explained over and over that I wanted my display repaired and that it was the law etc. they eventually got me a brand-new 30" in a box and sent me on my way. They said it was absolutely the last one and that if I had other repairs they would have to give me Thunderbolt displays. That was just a couple months before the 7 years was up so I took my new 30" and rejoiced and didn't bug them again lol.