I have a Porta-Brace case, designed to fit 17" Panasonic BT series monitors available for $200.
Color is blue. I bought it one month ago and used it for an 18 day shoot, but have no use for it anymore. It's in like-new condition, EXCEPT for one hole. I cut a 1" hole in the back, to fit a baby pin mount through. This does not affect the waterproofing when the case is closed, because I only cut the internal layer of fabric, as you can see in the photo. I used a Filmtools mount with removable baby pin, so at the end of each day, it's easy to unscrew the pin and zip up the case. Let me know if you want the mount too; I might be willing to include that.
This case fits the monitor well, and has removable flaps built in to make a 3 or 4-sided sun shade. Also has an adjustable kickstand so it can tilt when sitting on a table. All ports are accessible while in the case. And now that I cut a hole in the back, you can use the case with a C-stand mount too. Great for shooting in the rain.