IMO, giant KBs represent a bad value proposition.
If all you can do with it (or realistically aspire to do with it) is two-hand swings, you may as well just use a T-handle.
If you want to further load the ballistic hinge, you can also learn to snatch (higher amplitude) and/or use doubles (higher weight), for double cleans, double half-snatches, or double swings (inside or outside the legs).
Or get a barbell, which is one of the most versatile strength training tools there is, and do barbell deadlifts. Dimel DLs retain some of the explosive nature of swings, and any heavy DL will train your overall hinge strength.
Then there are all the explosive Olympic weightlifting variations.
I would buy a lighter KB to make a pair that I could clean, squat, or press before I would buy a single larger KB that I only aspire to press. And I would not buy a single KB larger than I would realistically aspire to press or snatch.
If I had unlimited resources, sure. But in the overall universe of equipment I'd like to have, a giant swing-only bell is far down the list.