Does anyone have experience with seller Kron on cartridges?

I had my first purchase through Kron a few weeks ago and have nothing but positive things to say about him. The cartridge was as advertised and it arrived really fast, faster than buying from some domestic sellers here in the US.

I have now bought four cartridges and an SUT from Vincent (Kron) and every transaction has been perfect. Aside from excellent prices, Vincent ships very quickly and responds quickly and courteously to all emails. I have paid by direct bank transfer and the cartridges were generally shipped same day. I give Vincent my highest recommendation.

What cartridges are you buying fro him? 
An old nos or vintage or grey market products ? 

I bought brand new Benz and Dynavector cartridges.

Chakster.
He sells a LOT of current Benz models and very good prices.
And I have seen a few Kiseki carts too.

Definitely not NOS vintage.
Grey market?Who knows?