Seems like a really good monitor. But I have to ask: Does it really have to be curved? The size is (allegedly) the same, so why the curve? Curved might be more tolerable at 32", but 49" is a bit too much (IMHO).
Or maybe the main consideration for some: More immersive? Well, maybe, but many will get the same experience from the same 49" monitor and most likely it will be less expensive!
There is many advantages to the curve.
Firstly for this screen of 49 inch it reduce the width to 47 inch with better readability, your eyes need less distance to find the corners.
On a flat screen the center is good but due to the angles of view the pixels becomes more and more deformed on the edges and smaller (from the viewer perspective), this also reduce the perceived lights making the corners darker.
Those makes corners more difficult to read. Here it's a curved 1800R screen, if you place your eyes at 1,8 meter from screen then all pixels will remain squares everywhere horizontally (because it is not curved vertically) making the lighting consistent.
But for that you need to be centered, so it's only for one person, for a presentation monitor or a TV it's better to be flat.
About the cost of curving, OLED is a flexible surface by nature, it's mainly a choice of form for the rigid support and adapt the assembling chain. This will not really cost more materials. Customers are generally paying a premium fee but you can find some curved monitors at the same price than non-curved monitors.