Hi,
I've dealt with Ryu many years back thru Amibench. I bought from him 21 titles of CD32 games - sent all the way from UK to Singapore. No problem at all. (I've passed on the discs to my 6-year-old son, who enjoys the games a lot.)
From time to time i sent him emails, for advice or just greeting, to which he also replied with much enthusiasm.
Cheers!