Click on Reading Room, then Sites of Interest in the pull down menu. In that list of sites, Fox Auctions is another qualified appraiser and auction house you might consider. I would strongly advise against using valuations from an antique dealer who does not have a specialty in steins, for two reasons:
Most general antique dealers have only a general knowledge of stein values, usually out of date with current market trends and not specific to individual steins, and
Most general antique dealers are ill-prepared to detect repairs or damage, and do not know how such defects affect valuation.