Mine is about 8 1/8.

We're talking about "one-size" hats here, so they're going to fit almost noone correctly. Sure, you can make the circumference stretch, but for me, it's as much about the depth of the hat. Even if something fits around my head it's often just perched on top, looking like a beanie. I typically don't even pay attention to hats anymore since none of them fit.

I have contacted both of the aforementioned people though just out of curiosity. Didn't get far enough along to enquire about pricing.