I saw this, thanks to checking in on the SJG Kickstarter:
Now, I have a copy of Call of Cthulhu. Not the boxed set, but rather the 4th edition softcover. That's enough for me - it's a good edition with a lot of extras. If I needed more stuff on my shelves to sit unused, I'd go for the boxed modules. They're a joy to read even I won't ever get to run them.
If you're not as lucky as I, you might be needing a good, physical copy of one of the best games ever designed. The prices for the kickstarter aren't that bad, either. This might be a good chance. I didn't want anyone who reads this blog to miss it and only find out later, like I have with so many things.