Looking up more about the seller just brings up more bad stuff.
Apparently he has sold 'parts swords' (put together) as full originals, over-exaggerates condition/not disclosing condition issues (pitting, rust, forging openings), further evidence of acid enhancing, and overall issues when a customer needed to return something.
Not to say he doesn't have good stuff from time to time, but it seems he doesn't tell the full truth on things.
I'm glad forum members here steered me in the right direction.