No idea about pricing, but Stewart has this for masking solution that probably suits me:
https://www.stewartfilmscreen.com/en/screens/wallmask
FWIW, I actually do watch most 16x9 content smaller on my 120" 16x9 screen, but not quite as small as on a CIH scope AR screen of same width. I only...
Personally, I don't see that much appeal to the use of scope AR screen anymore. Just go w/ the largest 16x9 screen you can and mask away as needed me thinks. There are times you're gonna want 16x9 to give you a (much) bigger image than the full width scope AR screen can, especially as more...