I belive him

I don't, either. For example, he lists 2007, 2011 and 2012 silver pandas in pouches. Silver pandas of those years were shipped from the mint WITHOUT pouches. Moreover, the pouches match a type that I have seen used with counterfeits. I have zero confidence in a seller who carries this type of product.
Best wishes,
Peter Anthony
NGC Consultant
China Pricepedia — Chinese Coin Prices and More
The Gold & Silver Panda Coin Buyer’s Guide 3
www.pandacollector.com