Still a pricy deal IMO, even with some higher-end pieces mixed in.
In the relisted lot of 1405 chips, the seller states asking price is calculated on 38.5% of listed values.
If you sort the list on "price: highest first", and run through the first page or two, it's not realistic at 38.5% IMO.
There seems to be a common denominator in the group as well ... which you can figure out, I'm sure.

He may be looking for a "best offer" bid substantially lower than listed.
Wouldn't be the first time to negotiate from a high starting point.

I think I have bought a chip or two from him over the years as well, with no problem.